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                                                                    EXHIBIT 10.8

                          EXODUS COMMUNICATIONS, INC.

                    INTERNET DATA CENTER SERVICES AGREEMENT

This INTERNET DATA CENTER SERVICES AGREEMENT (this "Agreement") is made
effective as of the Submission Date (October 19, 1998) indicated in the initial
Internet Data Center Service Order Form accepted by Exodus, by and between
Exodus Communications, Inc. ("Exodus") and the customer identified below
("Customer").

PARTIES:

CUSTOMER NAME: DIGITALTHINK
               --------------------------------

ADDRESS:       1000 BRANNAN STREET, SUITE 501
               --------------------------------

               --------------------------------

PHONE:         (415) 437-2800

FAX:           (415) 437-3877

EXODUS COMMUNICATIONS, INC.
2650 San Thomas Expressway
Santa Clara, CA 95051
Phone:    (408) 346-2200
Fax:      (408) 346-2206

1.   INTERNET DATA CENTER SERVICES.

Subject to the terms and conditions of this Agreement, during the term of this
Agreement, Exodus will provide to Customer the services described in the
Internet Data Center Services Order Form(s) ("IDC Services Order Form(s)")
accepted by Exodus, or substantially similar services would provide Customer
with substantially similar benefits ("Internet Data Center Services"). All IDC
Services Order Forms accepted by Exodus are incorporated herein by this
reference, each as of the Submission Date indicated in such form.

2.   FEES AND BILLING.

     2.1  Fees. Customer will pay all fees due according to the IDC Services
Order Form(s).

     2.2  Billing Commencement. Billing for Internet Data Center Services other
than Setup Fees, indicated in the initial IDC Services Order Form shall commence
on the earlier to occur of (i) the "Installation Date" indicated in the initial
IDC Services Order Form, regardless of whether Customer has commenced use of the
Internet Data Center Services, unless Customer is unable to install the Customer
Equipment and/or use the Internet Data Center Services by the Installation Date
due to the fault of Exodus, then billing will not begin until the date Exodus
has remedied such fault; and (ii) the date the "Customer Equipment" (Customer's
computer hardware and other tangible equipment, as identified in the Customer
Equipment List which is incorporated herein by this reference) is placed by
Customer in the "Customer Area" (the portion(s) of the Internet Data Centers, as
defined in Section 3.1 below, made available to Customer hereunder for the
placement of Customer Equipment) and is operational. All Setup Fees will be
billed upon receipt of a Customer signed IDC Services Order Form. In the event
that Customer orders additional Internet Data Center Services, billing for such
services shall commence on the date Exodus first provides such additional
Internet Data Center Services to Customer or as otherwise agreed to by Customer
and Exodus.

     2.3  Billing and Payment Terms. Customer will be billed monthly in advance
of the provision of Internet Data Center Services, and payment of such fees
will be due within thirty (30) days of the date of each Exodus invoice. All
payments will be made in U.S. dollars. Late payments hereunder will accrue
interest at a rate of one and one-half percent (1-1/2%) per month, or the
highest rate allowed by applicable law, whichever is lower. If in its judgment
Exodus determines that Customer is not creditworthy or is otherwise not
financially secure, Exodus may, upon written notice to Customer, modify the
payment terms to require full payment before the provision of Internet Data
Center Services or other assurances to secure Customer's payment obligations
hereunder.

     2.4  Taxes. All payments required by this Agreement are exclusive of all
national, state, municipal or other governmental excise, sales, value-added,
use, personal property, and occupational taxes, excises, withholding taxes and
obligations and other levies now in force or enacted in the future, all of
which Customer will be responsible for and will pay in full, except for taxes
based on Exodus' net income.

3.   CUSTOMER'S OBLIGATIONS.

     3.1  Compliance with Law and Rules and Regulations. Customer agrees that
Customer will comply at all times with all applicable laws and regulations and
Exodus' general rules and regulations relating to its provision of Internet
Data Center Services, as updated by Exodus from time to time ("Rules and
Regulations"). Customer acknowledges that Exodus exercises no control
whatsoever over the content of the information passing through its sites
containing the Customer Area and equipment and facilities used by Exodus to
provide Internet Data Center Services ("Internet Data Centers"), and that it is
the sole responsibility of Customer to ensure that the information it transmits
and receives complies with all applicable laws and regulations.

     3.2  Customer's Costs. Customer agrees that it will be solely responsible,
and at Exodus's request will reimburse Exodus, for all costs and expenses (other
than those included as part of the Internet Data Center Services and except as
otherwise expressly provided herein) it incurs in connection with this
Agreement.

     3.3  Access and Security. Customer will be fully responsible for any
charges, costs, expenses (other than those included in the Internet Data Center
Services), and third party claims that may result from its use of, or access
to, the Internet Data Center Services and/or the Customer Area including but
not limited to any unauthorized use of any access devices provided by Exodus
hereunder. Except with the advanced written consent of Exodus, Customer's
access to the Internet Data Centers will be limited solely to the individuals
identified and authorized by Customer to have access to the Internet Data
Centers and the Customer Area in accordance with this Agreement, as identified
in the Customer Registration Form, as amended from time to time, which is
hereby incorporated by this reference ("Representatives").

     3.4  No Competitive Services. Customer may not at any time permit any
Internet Data Center Services to be utilized for the provision of any services
that compete with any Exodus services, without Exodus' prior written consent.

     3.5  Insurance.

     (a)  Minimum Levels. Customer will keep in full force and effect during
the term of this Agreement (i) comprehensive general liability insurance in an
amount not less than $5 million per occurrence for bodily injury and property
damage; (ii) employer's liability insurance in an amount not less than $1
million per occurrence; and (iii) workers' compensation insurance in an amount
not less than that required by applicable law. Customer also agrees that it
will, and will be solely responsible for ensuring that its agents (including
contractors and subcontractors) maintain, other insurance at levels no less
than those required by applicable law and customary in Customer's and its
agents' industries.

     (b)  Certificates of Insurance. Prior to installation of any Customer
Equipment in the Customer Area, Customer will furnish Exodus with certificates
of insurance which evidence the minimum levels of insurance set forth above.

     (c)  Naming Exodus as an Additional Insured. Customer shall be solely
responsible for all personal injury and property damage caused by Customer's
negligent or improper actions through the use of Exodus' Internet Data Centers,
and Customer agrees to maintain general liability insurance coverage, including
employer's liability and workers' compensation coverage, adequate to cover this
potential liability. In the event that Customer ceases to carry insurance
mentioned above, the Customer will notify Exodus in writing.

4.   CONFIDENTIAL INFORMATION.

     4.1  Confidential Information. Each party acknowledges that it will have
access to certain confidential information of the other party concerning the
other party's business, plans, customers, technology, and products, including
the terms and conditions of this Agreement ("Confidential Information").
Confidential Information will include, but not be limited to, each party's
proprietary software and customer information. Each party agrees that it will
not use in any way, for its own account or the account of any third party,
except as expressly permitted by this Agreement, nor disclose to any third
party (except as required by law or to this party's attorneys, accountants and
other advisors as reasonably necessary), any of the other party's Confidential
Information and will take reasonable precautions to protect the confidentiality
of such information.

     4.2  Exceptions. Information will not be deemed Confidential Information
hereunder if such information: (i) is known to the receiving party prior to
receipt from the disclosing party directly or indirectly from a source other
than one having an obligation of confidentiality to the disclosing party; (ii)
becomes known (independently of disclosure by the disclosing party) to the
receiving party directly or indirectly from a source other than one having an
obligation of confidentiality to the disclosing party; (iii) becomes publicly
known or otherwise ceases to be secret or confidential, except through a breach
of this Agreement by the receiving party; or (iv) is independently developed by
the receiving party.

5.   REPRESENTATIONS AND WARRANTIES.

     5.1  Warrants by Customer.

     (a)  Customer Equipment. Customer represents and warrants that it owns or
has the legal right and authority, and will continue to own or maintain the
legal right and authority during the term of this Agreement, to place and use
the Customer Equipment as contemplated by this Agreement. Customer further
represents and warrants that its placement, arrangement, and use of the
Customer Equipment in the Internet Data Centers complies with the Customer
Equipment manufacturer's environmental and other specifications.

     (b)  Customer's Business. Customer represents and warrants that Customer's
services, products, materials, data, information and Customer Equipment used by
Customer in connection with this Agreement as well as Customer's and its
permitted customers' and users' use of the Internet Data Center Services
(collectively, "Customer's Business") does not as of the Installation Date, and
will not during the term of this Agreement operate in any manner that would
violate any applicable law or regulation.

     (c)  Rules and Regulations. Customer has read the Rules and Regulations
and represents and warrants that Customer and Customer's Business are currently
in full compliance with the Rules and Regulations, and will remain so at all
times during the term of this Agreement.

     (d)  Breach of Warranties. In the event of any breach, or reasonably
anticipated breach, of any of the foregoing warranties, in addition to any
other remedies available at law or in equity, Exodus will have the right
immediately, in Exodus' sole discretion, to suspend any

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related Internet Data Center Services if deemed reasonably necessary by Exodus
to prevent any harm to Exodus and its business.

     5.2 Warranties and Disclaimers by Exodus.

          5.2(a) Service Level Warranty. In the event Customer experiences any
of the following and Exodus determines in its reasonable judgment that such
inability was caused by Exodus' failure to provide Internet Data Center Services
for reasons within Exodus' reasonable control and not as a result of any actions
or inactions of Customer or any third parties (including Customer Equipment and
third party equipment), Exodus will, upon Customer's request in accordance with
paragraph (iii) below, credit Customer's account as described below:

          (i)   Inability to Access the Internet (Downtime). If Customer is
unable to transmit and receive information from Exodus' Internet Data Centers
(i.e., Exodus' LAN and WAN) to other portions of the Internet because Exodus
failed to provide the Internet Data Center Services for more than fifteen (15)
consecutive minutes, Exodus will credit Customer's account the pro-rata
connectivity charges (i.e., all bandwidth related charges) for one (1) day of
service, up to an aggregate maximum credit of connectivity charges for seven (7)
days of service in any one calendar (1) month. Exodus' scheduled maintenance of
the Internet Data Centers and Internet Data Center Services, as described in the
Rules and Regulations, shall not be deemed to be a failure of Exodus to provide
Internet Data Center Services. For purposes of the foregoing, "unable to
transmit and receive" shall mean sustained packet loss in excess of 50% based on
Exodus' measurements.

          (ii)  Packet Loss and Latency. Exodus does not proactively monitor the
packet loss or transmission latency of specific customers. Exodus does, however,
proactively monitor the aggregate packet loss and transmission latency within
its LAN and WAN. In the event that Exodus discovers (either from its own efforts
or after being notified by Customer) that Customer is experiencing packet loss
in excess of one percent (1%) ("Excess Packet Loss") or transmission latency in
excess of 120 milliseconds round trip time (based on Exodus' measurements)
between any two Internet Data Centers within Exodus' U.S. network (collectively,
"Excess Latency", and with Excess Packet Loss "Excess Packet Loss/Latency"), and
Customer notifies Exodus (or confirms that Exodus has notified Customer), Exodus
will take all actions necessary to determine the source of the Excess Packet
Loss/Latency.

               (A) Time to Discover Source of Excess Packet Loss/Latency;
Notification of Customer. Within two (2) hours of discovering the existence of
Excess Packet Loss/Latency, Exodus will determine whether the source of the
Excess Packet Loss/Latency is limited to the Customer Equipment and the Exodus
equipment connecting the Customer Equipment to Exodus' LAN ("Customer Specific
Packet Loss/Latency"). If the Excess Packet Loss/Latency is not a Customer
Specific Packet Loss/Latency, Exodus will determine the source of the Excess
Packet Loss/Latency within two (2) hours after determining that it is not a
Customer Specific Packet Loss/Latency. In any event, Exodus will notify Customer
of the source of the Excess Packet Loss/Latency within sixty (60) minutes after
identifying the source.

               (B) Remedy of Excess Packet Loss/Latency. If the Excess Packet
Loss/Latency is within the sole control of Exodus, Exodus will remedy the Excess
Packet Loss/Latency within two (2) hours of determining the source of the Excess
Packet Loss/Latency. If the Excess Packet Loss/Latency is caused from outside of
the Exodus LAN or WAN, Exodus will notify Customer and will use commercially
reasonable efforts to notify the party(ies) responsible for the source and
cooperate with it (them) to resolve the problem as soon as possible.

               (C) Failure to Determine Sources and/or Resolve Problem. In the
event Exodus is unable to determine the source of and remedy the Excess Packet
Loss/Latency within the time periods described above (where Exodus was solely in
control of the source), Exodus will credit Customer's account the pro-rata
connectivity charges for one (1) day of service for every two (2) hours after
the time periods described above that it takes Exodus to resolve the problem, up
to an aggregate maximum credit of connectivity charges for seven (7) days of
service in any one (1) month.

          (iii) Customer Must Request Credit. To receive any of the credits
described in this section 5.2(a), Customer must notify Exodus within three (3)
business days from the time Customer becomes eligible to receive a credit.
Failure to comply with this requirement will forfeit Customer's right to receive
a credit.

          (iv)  Remedies Shall Not Be Cumulative; Maximum Credit. In the event
that Customer is entitled to multiple credits hereunder arising from the same
event, such credits shall not be cumulative and Customer shall be entitled to
receive only the maximum single credit available for such event. In no event
will Exodus be required to credit Customer in any one (1) calendar month
connectivity charges in excess of seven (7) days of service. A credit shall be
applied only to the month in which there was the incident that resulted in the
credit. Customer shall not be eligible to recover any credits for periods in
which Customer received any Internet Data Center Services free of charge.

          (v)   Termination Options for Chronic Problems. If, in any single
calendar month, Customer would be able to receive credits totaling fifteen (15)
or more days (but for the limitation in paragraph (iv) above) resulting from
three (3) or more events during such calendar month or, if any single event
entitling customer to credits under paragraph 5.2(a)(i) exists for a period of
eight (8) consecutive hours, then, Customer may terminate this Agreement for
cause and without penalty by notifying Exodus within five (5) days following the
end of such calendar month. Such termination will be effective thirty (30) days
after receipt of such notice by Exodus.

This warranty does not apply to any Internet Data Center Services that
expressly exclude this warranty (as described in the specifications sheets for
such products). This Section 5.2(a) states customer's sole and exclusive remedy
for any failure by Exodus to provide Internet Data Center Services.

     (b) No Other Warranty. Except for the express warranty set out in
subsection (a) above, the Internet Data Center Services are provided on an "as
is" basis, and customer's use of the Internet Data Center Services is at its own
risk. Exodus does not make, and hereby disclaims, any and all other Express
and/or implied warranties, including, but not limited to, warranties of
merchantability, fitness for a particular purpose, noninfringement and title,
and any warranties arising from a course of dealing, usage or trade practice.
Exodus does not warrant that the Internet Data Center Services will be
uninterrupted, error-free, or completely secure.

     (c) Disclosure of Actions Caused by and/or Under the Control of Third
Parties. Exodus does not and cannot control the flow of data to or from Exodus'
Internet Data Centers and other portions of the Internet. Such flow depends in
large part on the performance of Internet services provided or controlled by
third parties. At times, actions or inactions caused by these third parties can
produce situations in which Exodus' customers' connections to the Internet (or
portions thereof) may be impaired or disrupted. Although Exodus will use
commercially reasonable efforts to take actions it deems appropriate to remedy
and avoid such events, Exodus cannot guarantee that they will not occur.
Accordingly, Exodus disclaims any and all liability resulting from or related to
such events.

6.   LIMITATIONS OF LIABILITY.

     6.1 Personal Injury. EACH REPRESENTATIVE AND ANY OTHER PERSONS VISITING THE
INTERNET DATA CENTERS DOES SO AT ITS OWN RISK AND EXODUS ASSUMES NO LIABILITY
WHATSOEVER FOR ANY HARM TO SUCH PERSONS RESULTING FROM ANY CAUSE OTHER THAN
EXODUS' NEGLIGENCE OR WILLFUL MISCONDUCT RESULTING IN PERSONAL INJURY TO SUCH
PERSONS DURING SUCH A VISIT.

     6.2 Damage to Customer Equipment or Business. EXODUS ASSUMES NO LIABILITY
FOR ANY DAMAGE TO, OR LOSS RELATING TO, CUSTOMER'S BUSINESS RESULTING FROM ANY
CAUSE WHATSOEVER. CERTAIN CUSTOMER EQUIPMENT, INCLUDING BUT NOT LIMITED TO
CUSTOMER EQUIPMENT LOCATED IN CYBERRACKS, MAY BE DIRECTLY ACCESSIBLE BY OTHER
CUSTOMERS. EXODUS ASSUMES NO LIABILITY FOR ANY DAMAGE TO, OR THE LOSS OF, ANY
CUSTOMER EQUIPMENT RESULTING FROM ANY CAUSE OTHER THAN EXODUS' GROSS NEGLIGENCE
OR WILLFUL MISCONDUCT. TO THE EXTENT EXODUS IS LIABLE FOR ANY DAMAGE TO, OR LOSS
OF, THE CUSTOMER EQUIPMENT FOR ANY REASON, SUCH LIABILITY WILL BE LIMITED SOLELY
TO THE THEN-CURRENT VALUE OF THE CUSTOMER EQUIPMENT.

     6.3 Exclusions. EXCEPT AS SPECIFIED IN SECTIONS 6.1 AND 6.2, IN NO EVENT
WILL EXODUS BE LIABLE TO CUSTOMER, ANY REPRESENTATIVE, OR ANY THIRD PARTY FOR
ANY CLAIMS ARISING OUT OF OR RELATED TO THE AGREEMENT, CUSTOMER EQUIPMENT,
CUSTOMER'S BUSINESS OR OTHERWISE, AND ANY LOST REVENUE, LOST PROFITS,
REPLACEMENT GOODS, LOSS OF TECHNOLOGY, RIGHTS OR SERVICES, INCIDENTAL, PUNITIVE,
INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF DATA, OR INTERRUPTION OR LOSS OF USE
OF SERVICE OR OF ANY CUSTOMER EQUIPMENT OR CUSTOMER'S BUSINESS, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES, WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE.

     6.4 Maximum Liability. NOTWITHSTANDING ANYTHING TO THE CONTRARY IN THIS
AGREEMENT, EXODUS' MAXIMUM AGGREGATE LIABILITY TO CUSTOMER RELATED TO OR IN
CONNECTION WITH THIS AGREEMENT WILL BE LIMITED TO THE TOTAL AMOUNT PAID BY
CUSTOMER TO EXODUS HEREUNDER FOR THE PRIOR TWELVE (12) MONTH PERIOD.

     6.5 Customer's Insurance. Customer agrees that it will not pursue any
claims against Exodus for any liability Exodus may have under or relating to
this Agreement until Customer first makes claims against Customer's insurance
provider(s) and such insurance provider(s) finally resolve(s) such claims.

     6.6 Basis of the Bargain; Failure of Essential Purpose. Customer
acknowledges that Exodus has set its prices and entered into this Agreement in
reliance upon the limitations of liability and the disclaimers of warranties and
damages set forth herein, and that the same form an essential basis of the
bargain between the parties. The parties agree that the limitations and
exclusions of liability and disclaimers specified in this Agreement will survive
and apply even if found to have failed of their essential purpose.

7.   INDEMNIFICATION.

     7.1 Exodus' Indemnification of Customer. Exodus will indemnify, defend and
hold Customer harmless from and against any and all costs, liabilities, losses,
and expenses (including, but not limited to, reasonable attorneys' fees)
(collectively, "Losses") resulting from any claim, suit, action, or proceeding
(each, an "Action") brought against Customer alleging (i) the infringement of
any third party registered U.S. copyright or issued U.S. patent resulting from
the provision of Internet Data Center Services pursuant to this Agreement (but
excluding any infringement contributorily caused by Customer's Business or
Customer's Equipment) and (ii) personal injury to Customer's Representatives
from Exodus' gross negligence or willful misconduct.

     7.2 Customer's Indemnification of Exodus. Customer will indemnify, defend
and hold Exodus, its affiliates and customers harmless from and against any and
all Losses resulting from or arising out of any Action brought by or against
Exodus, its affiliates or customers alleging, (a) with respect to Customer's
Business (i) infringement or misappropriation of any intellectual property
rights, (ii) defamation, libel, slander, obscenity, pornography, or

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violation of the rights of privacy or publicity; or (iii) spamming, or any
other offensive, harassing or illegal conduct or violation of the Rules and
Regulations; (b) any damage or destruction to the Customer Area, the Internet
Data Centers or the equipment of Exodus or any other customer by Customer or
Representative(s) or Customer's designees; or (c) any other damage arising from
the Customer Equipment or Customer's Business.

     7.3 Notice. Each party will provide the other party prompt written notice
upon of the existence of any such event of which it becomes aware, and an
opportunity to participate in the defense thereof.

8.   TERM AND TERMINATION.

     8.1 Term. This Agreement will be effective for a period of one (1) year
from the Installation Date, unless earlier terminated according to the
provisions of this Section 8. The Agreement will automatically renew for
additional terms of one (1) year each.

     8.2 Termination.

     (a) For Convenience.

     (i) By Customer During First Thirty Days. Customer may terminate this
Agreement for convenience by providing written notice to Exodus at any time
during the thirty (30) day period beginning on the Installation Date.

     (ii) By Either Party. Either party may terminate this Agreement for
convenience at any time effective after the first (1st) anniversary of the
Installation Date by providing ninety (90) days' prior written notice to the
other party at any time thereafter.

     (b) For Cause. Either party will have the right to terminate this
Agreement if: (i) the other party breaches any material term or condition of
this Agreement and fails to cure such breach within thirty (30) days after
receipt of written notice of the same, except in the case of failure to pay
fees, which must be cured within five (5) days after receipt of written notice
from Exodus; (ii) the other party becomes the subject of a voluntary petition
in bankruptcy or any voluntary proceeding relating to insolvency, receivership,
liquidation, or composition for the benefit of creditors; or (iii) the other
party becomes the subject of an involuntary petition in bankruptcy or any
involuntary proceeding relating to insolvency, receivership, liquidation, or
composition for the benefit of creditors, if such petition or proceeding is not
dismissed within sixty (60) days of filing.

     8.3 No Liability for Termination. Neither party will be liable to the
other for any termination or expiration of this Agreement in accordance with
its terms.

     8.4 Effect of Termination. Upon the effective date of expiration or
termination of this Agreement: (a) Exodus will immediately cease providing the
Internet Data Center Services; (b) any and all payment obligations of Customer
under this Agreement will become due immediately; (c) within thirty (30) days
after such expiration or termination, each party will return all Confidential
Information of the other party in its possession at the time of expiration or
termination and will not make or retain any copies of such Confidential
Information except as required to comply with any applicable legal or
accounting record keeping requirement; and (d) Customer will remove from the
Internet Data Centers all Customer Equipment and any of its other property
within the Internet Data Centers within five (5) days of such expiration or
termination and return the Customer Area to Exodus in the same condition as it
was on the Installation Date, normal wear and tear excepted. If Customer does
not remove such property within such five-day period, Exodus will have the
option to (i) move any and all such property to secure storage and charge
Customer for the cost of such removal and storage, and/or (ii) liquidate the
property in any reasonable manner.

     8.5 Customer Equipment as Security. In the event that Customer fails to pay
Exodus all amounts owed Exodus under this Agreement when due, Customer Agrees
that upon written notice, Exodus may take possession of any Customer Equipment
and store it, at Customer's expense, until taken in full or partial satisfaction
of any lien or judgment, all without being liable to prosecution or for damages.

     8.6 Survival. The following provisions will survive any expiration or
termination of the Agreement: Sections 2, 3, 4, 5, 6, 7, 8 and 9.

9.   MISCELLANEOUS PROVISIONS.

     9.1 Force Majeure. Except for the obligation to pay money, neither party
will be liable for any failure or delay in its performance under this Agreement
due to any cause beyond its reasonable control, including act of war, acts of
God, earthquake, flood, embargo, riot, sabotage, labor shortage or dispute,
governmental act or failure of the Internet, provided that the delayed party:
(a) gives the other party prompt notice of such cause, and (b) uses its
reasonable commercial efforts to correct promptly such failure or delay in
performance.

     9.2 No Lease. This Agreement is a services agreement and is not intended
to and will not constitute a lease of any real or personal property. Customer
acknowledges and agrees that (i) it has been granted only a license to occupy
the Customer Space and use the Internet Data Centers and any equipment provided
by Exodus in accordance with this Agreement, (ii) Customer has not been granted
any real property interest in the Customer Space or Internet Data Centers, and
(iii) Customer has no rights as a tenant or otherwise under any real property
or landlord/tenant laws, regulations, or ordinances. For good cause, including
the exercise of any rights under Section 8.5 above, Exodus may suspend the
right of any Representative or other person to visit the Internet Data Centers.

     9.3 Advertising. Customer agrees that Exodus may refer to Customer by
trade name and trademark, and may briefly describe Customer's Business, in
Exodus' marketing materials and web site. Customer hereby grants Exodus a
license to use any Customer trade names and trademarks solely in connection
with the rights granted to Exodus pursuant to this Section 9.3.

     9.4 Government Regulations. Customer will not export, re-export, transfer,
or make available, whether directly or indirectly, any regulated item or
information to anyone outside the U.S. in connection with this Agreement
without first complying with all export control laws and regulations which may
be imposed by the U.S. Government and any country or organization of nations
within whose jurisdiction Customer operates or does business.

     9.5 Non-Solicitation. During the period beginning on the Installation Date
and ending on the first anniversary of the termination or expiration of this
Agreement in accordance with its terms, Customer agrees that it will not, and
will ensure that its affiliates do not, directly or indirectly, solicit or
attempt to solicit for employment any persons employed by Exodus during such
period.

     9.6 Governing Law; Dispute Resolution; Severability; Waiver. This Agreement
is made under and will be governed by and construed in accordance with the laws
of the State of California (except that body of law controlling conflicts of
law) and specifically excluding from application to this Agreement that law
known as the United Nations Convention on the International Sale of Goods. Any
dispute relating to the terms, interpretation or performance of this Agreement
(other than claims for preliminary injunctive relief or other pre-judgment
remedies) will be resolved at the request of either party through binding
arbitration. Arbitration will be conducted in Santa Clara County, California,
under the rules and procedures of the Judicial Arbitration and Mediation
Society ("JAMS"). The parties will request that JAMS appoint a single
arbitrator possessing knowledge of online services agreements; however the
arbitration will proceed even if such a person is unavailable in the event of
any provision of this Agreement is held by a tribunal of competent jurisdiction
to be contrary to the law, the remaining provisions of this Agreement will
remain in full force and effect. The waiver of any breach or default of this
Agreement will not constitute a waiver of any subsequent breach or default, and
will not act to amend or negate the rights of the waiving party.

     9.7 Assignments; Notices. Customer may not assign its rights or delegate
its duties under this Agreement either in whole or in part without the prior
written consent of Exodus, except that Customer may assign this Agreement in
whole as part of a corporate reorganization, consolidation, merger, or sale of
substantially all of its assets. Any attempted assignment or delegation without
such consent will be void. Exodus may assign this Agreement in whole or part.
This Agreement will bind and inure to the benefit of each party's successors
and permitted assigns. Any notice or communication required or permitted to be
given hereunder may be delivered by hand, deposited with an overnight courier,
sent by confirmed facsimile, or mailed by registered or certified mail, return
receipt requested, postage prepaid, in each case to the address of the
receiving party indicated on the signature page hereof, or at such other
address as may hereafter be furnished in writing by either party hereto to the
other. Such notice will be deemed to have been given as of the date it is
delivered, mailed or sent, whichever is earlier.

     9.8 Relationship of Parties. Exodus and Customer are independent
contractors and this Agreement will not establish any relationship of
partnership, joint venture, employment, franchise or agency between Exodus and
Customer. Neither Exodus nor Customer will have the power to bind the other or
incur obligations on the other's behalf without the other's prior written
consent, except as otherwise expressly provided herein.

     9.9 Entire Agreement; Counterparts. This Agreement, including all
documents incorporated herein by reference, constitutes the complete and
exclusive agreement between the parties with respect to the subject matter
hereof, and supersedes and replaces any and all prior or contemporaneous
discussions, negotiations, understandings and agreements, written and oral,
regarding such subject matter. This Agreement may be executed in two or more
counterparts, each of which will be deemed an original, but all of which
together shall constitute one and the same instrument.

Customer's and Exodus' authorized representatives have read the foregoing and
all documents incorporated therein and agree and accept such terms effective as
of the date first above written.

CUSTOMER                                EXODUS COMMUNICATIONS, INC.

Signature:     /s/ ALVIN CHU            Signature:     /s/ SUE IRVINE
          ------------------------                ---------------------------

Print Name:    ALVIN CHU                Print Name:    SUE IRVINE
          ------------------------                ---------------------------

Title:    WEB SYSTEMS ARCHITECT         Title:    CONTRACTS MGR
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Nonstandard - DigitalThink
EXODUS COMMUNICATIONS, INC. CONFIDENTIAL AND PROPRIETARY (rev 6/98)       Page 3<PAGE>   1
                                                                    EXHIBIT 10.9

                                                                 TI/DigitalThink
                                                                 MSC #12491-r
                                                                 Page 1 of 3

                                   AGREEMENT

     WHEREAS, TEXAS INSTRUMENTS INCORPORATED, acting through its Semiconductor
Group, ("TI"), with a principal place of business at 13500 North Central
Expressway, Dallas, Texas 75243, desires to secure education and training
services for its employees; and

     WHEREAS, DIGITALTHINK ("DIGITALTHINK") with a principal office at 860 2nd
Street, Suite 12, San Francisco, CA 94107, desires to provide such education
and training services for TI,

     NOW, THEREFORE, the parties agree as follows:

1.   SCOPE OF WORK: The services to be performed according to this Agreement
     relate to project management resources, development of course syllabus for
     TI's course ("COURSE") of instruction for delivery worldwide via Internet
     as specified in Attachment I (which is attached hereto and by this
     reference made a part hereof).

2.   TERM OF AGREEMENT: The Effective Date of this Agreement shall be May 1,
     1997, regardless of the date of execution hereof, and shall continue until
     December 31, 2002.

3.   COMPENSATION: TI shall pay DIGITALTHINK a Pre-payment fee as follows:
     twenty-five thousand dollars ($25,000.00) upon execution of this Agreement;
     twenty-five thousand dollars ($25,000.00) at conclusion of Beat Test, and
     fifty thousand dollars ($50,000.00) upon "live" launch via Internet (Total
     $100,000.00).

4.   COURSE: The COURSE, as currently defined, will contain between 10 and 20
     hours of instruction. COURSE development includes all work required to
     create and build this COURSE for delivery via the Web.

     * DIGITALTHINK RESPONSIBILITIES:
       - Provide project management resources
       - Assist in the design of a COURSE syllabus and outline
       - Review content and provide guidance to content expert
       - Produce the COURSE including technical layout, creation of artwork,
         use of interactive Java applets and tools, incorporation and production
         of audio clips, and editing/proofing.

     * TI RESPONSIBILITIES:
       - Identify the content expert prior to the formal start of the project
       - Design the COURSE syllabus and outline detailing lessons, quizzes,
         exercises, projects, diagrams, and interactive elements
       - Create the COURSE content (this may require as much as 120 hours from
         the content expert but can vary depending on the state of existing
         content and the expertise of the expert; content must be provided to
         DIGITALTHINK in the form of an electronic ASCII file).

5.   REPORTS With respect to the services performed by DIGITALTHINK according
     to this Agreement, DIGITALTHINK shall deliver to TI reports and
     documentation as may be periodically required by TI.

6.   COMMUNICATION AND ADMINISTRATION For and on behalf of DIGITALTHINK and TI,
the persons designated below shall have cognizance of the services provided
pursuant to this Agreement, and liaison and general administration of the
Agreement for DIGITALTHINK and TI shall be through them. All documents required
hereunder shall be sent directly to these individuals:

<PAGE>   2
                                                                    MSC #12491-r
                                                                    Page 2 of 3

IF TO TI:                    IF TO DIGITALTHINK:     WITH COPY TO:
7839 Churchhill Way, MS3984  860 2nd St., Suite 12   8505 Forest Lance, M/S 8670
Dallas, TX 75243             San Francisco, CA 95107 Dallas, TX 75243
Attn: Steve Lindsey          Attn: Pete Goettner     Attn: Mgr., Business
                                                                 Services

 7.  WORK PRODUCT COURSE materials designed and developed specifically for TI
     shall be the exclusive property of TI, and shall not be disclosed to any
     other person, firm, or corporation, or used by DIGITALTHINK or others
     without the prior written consent of TI.

 9.  CONFLICTING AGREEMENT: DIGITALTHINK warrants that it is not a party to any
     other existing agreement which would prevent DIGITALTHINK from entering
     into this Agreement or which would adversely affect this Agreement.

10.  INDEPENDENT CONTRACTOR: It is understood and agreed that DIGITALTHINK shall
     be acting as an independent contractor and not as an agent or employee of
     TI. Accordingly, DIGITALTHINK assumes all risks and hazards encountered in
     its performance Agreement, and further DIGITALTHINK shall be solely
     responsible for all injuries, including death, to all persons and all loss
     or damage to property which are attributed to DIGITALTHINK performance
     under this Agreement or that of any agent, employee or subcontractor
     engaged by DIGITALTHINK.

11.  TERMINATION:

     Either party may terminate this Agreement at any time upon one (1) working
     days' written notice prior to completion of last phase, i.e. "live" launch
     on Internet, subject to:

                A.  CAUSE:

                       1.  In the event TI terminates this Agreement due to
                           DIGITALTHINK'S material breach of its obligations
                           stated in the Agreement after TI has given written
                           notice of such breach and allowed DIGITALTHINK thirty
                           (30) days to cure, TI liability shall be limited to
                           the payment made to such termination date.

                       2.  In the event DIGITALTHINK terminates this Agreement
                           due to TI's material breach of its obligation stated
                           in this Agreement after DIGITALTHINK has given
                           written notice of such breach and allowed TI thirty
                           (30) days to cure, DIGITALTHINK shall be liable for
                           the pre-payment fee, i.e. $100,000).

                B.  WITHOUT CAUSE:

                       1.  In the event TI terminates this Agreement without
                           cause, TI will pay DIGITALTHINK the full pre-payment
                           fee ($100,000).

                       2.  In the event DIGITALTHINK terminates this Agreement
                           without cause, DIGITALTHINK will refund all funds
                           paid by TI for services rendered under this
                           Agreement.

12.  BINDING AGREEMENT: This Agreement shall be binding upon and inure to the
     benefit of the successors and assigns of TI and shall be binding upon and
     inure to the benefit of TI's heirs, legal representatives, successors and
     assigns.

13.  GOVERNING LAW: The terms and conditions of this Agreement and performance
     hereunder shall be construed in accordance with the laws of the State of
     Texas.

<PAGE>   3
                                                                    MSC #12491-r
                                                                     Page 3 of 3

14.  ASSIGNMENT: This Agreement shall not be assignable by DIGITALTHINK without
     the written consent of TI, and any purported assignment, including full or
     partial assignment or delegation to any event or subcontractor, not
     permitted hereunder, shall be void.

15.  MODIFICATION: TI may request DIGITALTHINK to provide additional services in
     writing at any time during the duration of this Agreement. This Agreement
     and any attachment hereto shall be modified only by an instrument in
     writing and signed by duly authorized representatives of the parties.

16.  TAXES: DIGITALTHINK shall be solely responsible for payment of all taxes
     which arise in connection with its business activities in performing
     services for TI.

17.  INSURANCE: DIGITALTHINK shall be solely responsible for all personal injury
     and property damage caused by DIGITALTHINK negligent or improper actions
     while performing services for TI, and DIGITALTHINK agrees to maintain
     general liability insurance coverage, including automobile insurance
     coverage, adequate to cover this potential liability.

18.  RELEASE OF INFORMATION: DIGITALTHINK shall not disclose the subject matter
     of any TI service order issued to DIGITALTHINK, the terms of this
     Agreement, or the fact that TI has contracted for its services, without the
     prior written consent of TI.

19.  ENTIRE AGREEMENT: This Agreement, Attachment I, and the service orders
     issued hereunder constitute the entire business agreement between TI and
     DIGITALTHINK, and supersedes any other agreements, express or implied. No
     other terms and conditions shall be applicable, unless agreed upon between
     TI and DIGITALTHINK by formal written modification of this Agreement. In
     the event of a conflict between the terms of this Agreement and the terms
     appearing on the face of any TI service order issued to DIGITALTHINK, the
     terms of this Agreement shall govern.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed
by their duly authorized representatives as of the Effective Date hereof.

TEXAS INSTRUMENTS INCORPORATED          DIGITAL THINK

BY:  /s/ J.F. ESCOBAR                   BY:  /s/ TODD A. CLYDE
     ----------------------------            ----------------------------
        Francisco Escobar                       Todd A. Clyde

TITLE:  MGR, TI MARKETING SVCS          TITLE:  Director Custom Services
       --------------------------              --------------------------

DATE:   4-2-98                          DATE:     4-30-98
     ----------------------------            ----------------------------

<PAGE>   4
                                                                    ATTACHMENT 1
                                                                    MSC #12491-r
                                                                     Page 1 of 2

                                  ATTACHMENT I

                               STATEMENT OF WORK:

A.    TARGET AUDIENCE/OBJECTIVES

      TI's primary target audience is design engineers for use in the low-cost
'C54xDSK plus platform to:

      *     Experiment with digital signal processing concepts and techniques
      *     Analyze the capabilities of the 'C54x
      *     evaluate the 'C54x for possible use in their designs

B.    BETA TESTING

      At the conclusion of the production phase, DIGITALTHINK will install the
COURSE on its live site and begin the beta test phase. The parties estimate this
phase should take four weeks to complete. User feedback will be used to improve
the COURSE, train tutors, and build responses in the threaded discussion area.

      *     DIGITALTHINK will manage the beta test program including the
            registration of beta testers, collection of beta feedback, and issue
            resolution

      *     TI will identify a minimum of 10 beta testers and provide access to
            the 'C54x DSK plus for beta test

C.    COURSE DELIVERY

            1.    DIGITALTHINK RESPONSIBILITIES:

                  -     Deliver COURSE worldwide via Internet; DIGITALTHINK will
                        initially support North America in 1997 and will
                        establish sites in Europe and Asia in 1998 to improve
                        delivery speed

                  -     Ensure the site for this training is up 24 hours per
                        day, 7 days per week, 365 days per year with reasonable,
                        pre-scheduled down time for maintenance and upgrades

                  -     Manage and monitor instructor involvement

                  -     Manage and compensate tutors used to support this COURSE

                  -     Collect data and market feedback and provide this to TI;
                        participants will be notified that their personal
                        information is being passed from DIGITALTHINK to TI and
                        will be given the option of being included/excluded
                        from company mailings

                  -     Coordinate maintenance and incorporate changes to the
                        COURSE

            2.    TI RESPONSIBILITIES:

                  -     Identify an instructor who will be involved in teaching
                        the COURSE; the instructor will spend approximately 1
                        hour per week participating in chats, discussions, and
                        answering e-mail

                  -     Assist in identifying qualified tutors, e.g., former TI
                        employees, trainers, third parties, etc.

                  -     Determine how to retrieve and use data and market
                        feedback collected by DIGITALTHINK

                  -     Provide content updates and yearly maintenance is
                        estimated at hours per year

D.    PROMOTION/SALES

      TI will take the primary role in selling and promoting this COURSE which
may include the following elements:

      *     Education of sales force

      *     Sales programs

      *     Internal TI promotions

      *     Advertising

      *     Public relations

      *     CD-ROM kits
<PAGE>   5

                                                                    Attachment I
                                                                    MSC #12491-r
                                                                    Page 2 of 2

E.   COST

     1. 3RD PARTY COST: This COURSE will list for $349/seat which includes the
     $149 DSKplus kit. TI and DIGITALTHINK agrees to sales to 3rd parties, a
     coupon will be included with the DSKplus kit when a seat has been
     purchased. The coupon would contain a special code that would allow one
     user to access the COURSE Web-site for a reasonable period of time to
     complete the training. Coupons would be printed and supplied by
     DIGITALTHINK. TI would insert the coupons into the DSKplus kit.

     2.   TI COST: TI will get the entire for the DSKplus kit for $149. Until
     TI's uses $100,000 (prepaid fee) for its internal or "give-a-way" students,
     $200/seat will be credited to TI, and $100/seat will be credited for all
     other purchased seats. Upon TI's recouping the $100,000, DIGITALTHINK will
     receive $200/seat. DIGITALTHINK will track seat purchases and reimburse TI
     accordingly.

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