Exhibit 10.16

WARRANT TO PURCHASE STOCK

THIS
WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AND PURSUANT TO THE
PROVISIONS OF ARTICLE 5 BELOW, MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND APPLICABLE STATE SECURITIES LAW OR, IN THE
OPINION OF LEGAL COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION IS EXEMPT FROM REGISTRATION.

|Company:          | Sento Corporation                                                                                                                             
|----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------
|Number of Shares: | 60,000                                                                                                                                        
|Class of Stock:   | Common Stock                                                                                                                                  
|Warrant Price:    | $1.79 per share (which price shall equal 110% of the price per share of Common Stock of the Company at the close of trading on the Issue Date)
|Issue Date:       | April 15, 2003                                                                                                                                
|Expiration Date:  | April 15, 2008                                                                                                                                

THIS
WARRANT CERTIFIES THAT, for the agreed upon value of $1.00 and for other good and valuable consideration, SILICON VALLEY BANK ("Holder") is entitled to purchase the number of fully
paid and nonassessable shares of the class of securities (the "Shares") of the company (the "Company") at the Warrant Price, all as set forth above and as adjusted pursuant to Article 2 of this
Warrant, subject to the provisions and upon the terms and conditions set forth in this Warrant.

ARTICLE
1.EXERCISE.

1.1Method of Exercise.Holder may exercise this Warrant by delivering a duly executed Notice of Exercise in
substantially the form attached as Appendix 1 to the principal office of the Company. Unless Holder is exercising the conversion right set forth in Article 1.2, Holder shall also deliver
to the Company a check, wire transfer (to an account designated by the Company), or other from of payment acceptable to the Company for the aggregate Warrant Price for the Shares being purchased.

1.2Conversion Right.In lieu of exercising this Warrant as specified in Article 1.1, Holder may from
time to time convert this Warrant, in whole or in part, into a number of Shares determined by dividing (a) the aggregate fair market value of the Shares or other securities otherwise issuable
upon exercise of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair market value of one Share. The fair market value of the Shares shall be determined pursuant to
Article 1.3.

1.3Fair Market Value.If the Company's common stock is traded in a public market and the shares are common
stock, the fair market value of each Share shall be the closing price of a Share reported for the business day immediately before Holder delivers its Notice of Exercise to the Company (or in the
instance where the Warrant is exercised immediately prior to the effectiveness of the Company's initial public offering, the "price to public" per share price specified in the final prospectus
relating to such offering). If the Company's common stock is traded in a public market and the Shares are preferred stock, the fair market value of a Share shall be the closing price of a share of the
Company's common stock reported for the business day immediately before Holder delivers its Notice of Exercise to the Company (or, in the instance where the Warrant is exercised immediately prior to
the effectiveness of the Company's initial public offering, the initial "price to public" per share price specified in the final prospectus relating to such offering), in both cases, multiplied by the
number of shares of the Company's common stock into which a Share is convertible. If the Company's common

---

stock
is not traded in a public market, the Board of Directors of the Company shall determine fair market value in its reasonable good faith judgment.

1.4Delivery of Certificate and New Warrant.Promptly after Holder exercises or converts this Warrant and, if
applicable, the Company receives payment of the aggregate Warrant Price, the Company shall deliver to Holder certificates for the Shares acquired and, if this Warrant has not been fully exercised or
converted and has not expired, a new Warrant representing the Shares not so acquired.

1.5Replacement of Warrants.On receipt of evidence reasonably satisfactory to the Company of the loss, theft,
destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, on delivery of an indemnity agreement reasonably satisfactory in form and amount to the Company or, in the
case of mutilation, or surrender and cancellation of this Warrant, the Company shall execute and deliver, in lieu of this Warrant, a new warrant of like tenor.

1.6Treatment of Warrant Upon Acquisition of Company.



A)    Upon
the written request of the Company, Holder agrees that, in the event of an Acquisition in which the sole consideration is cash, either (a) Holder shall exercise its
conversion or purchase right under this Warrant and such exercise will be deemed effective immediately prior to the consummation of such Acquisition or (b) if Holder elects not to exercise the
Warrant, this Warrant will expire upon the consummation of such Acquisition. The Company shall provide the Holder with written notice of its request relating to the foregoing (together with such
reasonable information as the Holder may request in connection with such contemplated Acquisition giving rise to such notice), which is to be delivered to Holder not less than ten (10) days
prior to the closing of the proposed Acquisition.

B)    Upon
the written request of the Company, Holder agrees that, in the event of an Acquisition that is an "arms length" sale of all or substantially all of the Company's assets (and only
its assets) to a third party that is not an Affiliate (as defined below) of the Company (a "True Asset Sale"), either (a) Holder shall exercise its conversion or purchase right under this
Warrant and such exercise will be deemed effective immediately prior to the consummation of such Acquisition or (b) if Holder elects not
to exercise the Warrant, this Warrant will continue until the Expiration Date if the Company continues as a going concern following the closing of any such True Asset Sale. The Company shall provide
the Holder with written notice of its request relating to the foregoing (together with such reasonable information as the Holder may request in connection with such contemplated Acquisition giving
rise to such notice), which is to be delivered to Holder not less than ten (10) days prior to the closing of the proposed Acquisition.

C)    Upon
the closing of any Acquisition other than those particularly described in subsections (A) and (B) above, the successor entity shall assume the obligations of this
Warrant, and this Warrant shall be exercisable for the same securities, cash, and property as would be payable for the Shares issuable upon exercise of the unexercised portion of this Warrant as if
such Shares were outstanding on the record date for the Acquisition and subsequent closing. The Warrant Price and/or number of Shares shall be adjusted accordingly.

As
used herein "Affiliate" shall mean any person or entity that owns or controls directly or indirectly ten (10) percent or more of the stock of
Company, any person or entity that controls or is controlled

2

---

by
or is under common control with such persons or entities, and each of such person's or entity's officers, directors, joint venturers or partners, as applicable.

ARTICLE
2.ADJUSTMENTS TO THE SHARES.

2.1Stock Dividends, Splits, Etc.If the Company declares or pays a dividend on the Shares payable in common
stock, or other securities, then upon exercise of this Warrant, for each Share acquired, Holder shall receive, without cost to Holder, the total number and kind of securities to which Holder would
have been entitled had Holder owned the Shares of record as of the date the dividend occurred. If the Company subdivides the Shares by reclassification or otherwise into a greater number of shares or
takes any other action which increase the amount of stock into which the Shares are convertible, the number of shares purchasable hereunder shall be proportionately increased and the Warrant Price
shall be proportionately decreased. If the outstanding shares are combined or consolidated, by reclassification or otherwise, into a lesser number of shares, the Warrant Price shall be proportionately
increased and the number of Shares shall be proportionately decreased.

2.2Reclassification, Exchange, Combinations or Substitution.Upon any reclassification, exchange, substitution,
or other event that results in a change of the number and/or class of the securities issuable upon exercise or conversion of this Warrant, Holder shall be entitled to receive, upon exercise or
conversion of this Warrant, the number and kind of securities and property that Holder would have received for the Shares if this Warrant had been exercised immediately before such reclassification,
exchange, substitution, or other event. Such an event shall include any automatic conversion of the outstanding or issuable securities of the Company of the same class or series as the Shares to
common
stock pursuant to the terms of the Company's Articles or Certificate (as applicable) of Incorporation upon the closing of a registered public offering of the Company's common stock. The Company or its
successor shall promptly issue to Holder an amendment to this Warrant setting forth the number and kind of such new securities or other property issuable upon exercise or conversion of this Warrant as
a result of such reclassification, exchange, substitution or other event that results in a change of the number and/or class of securities issuable upon exercise or conversion of this Warrant. The
amendment to this Warrant shall provide for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article 2 including, without
limitation, adjustments to the Warrant Price and to the number of securities or property issuable upon exercise of the new Warrant. The provisions of this Article 2.2 shall similarly apply to
successive reclassifications, exchanges, substitutions, or other events.

2.3Adjustments for Diluting Issuances.The Warrant Price and the number of Shares issuable upon exercise of
this Warrant or, if the Shares are Preferred Stock, the number of shares of common stock issuable upon conversion of the Shares, shall be subject to adjustment, from time to time in the manner set
forth in the Company's Articles or Certificate of Incorporation as if the Shares were issued and outstanding on and as of the date of any such required adjustment. The provisions set forth for the
Shares in the Company's Articles or Certificate (as applicable) of Incorporation relating to the above in effect as of the Issue Date may not be amended, modified or waived, without the prior written
consent of Holder unless such amendment, modification or waiver affects the rights associated with the Shares in the same manner as such amendment, modification or waiver affects the rights associated
with all other shares of the same series and class as the Shares granted to the Holder.

2.4No Impairment.The Company shall not, by amendment of its Articles or Certificate (as applicable) of
Incorporation or through a reorganization, transfer of assets, consolidation, merger, dissolution, issue, or sale of securities or any other voluntary action, avoid or seek to avoid the observance or
performance of any of the terms to be observed or performed under this Warrant by the Company, but shall at all times in good faith assist in carrying out of all the provisions of this
Article 2 and in taking all such action as may be necessary or appropriate to protect Holder's rights under this Article against impairment.

3

---

2.5Fractional Shares.No fractional Shares shall be issuable upon exercise or conversion of the Warrant and the
number of Shares to be issued shall be rounded down to the nearest whole Share. If a fractional share interest arises upon any exercise or conversion of the Warrant, the Company shall eliminate such
fractional share interest by paying Holder the amount computed by multiplying the fractional interest by the fair market value of a full Share.

2.6Certificate as to Adjustments.Upon each adjustment of the Warrant Price, the Company shall promptly notify
Holder in writing, and, at the Company's expense, promptly compute such adjustment, and furnish Holder with a certificate of its Chief Financial Officer setting forth such adjustment and the facts
upon which such adjustment is based. The Company shall, upon written request, furnish
Holder a certificate setting forth the Warrant Price in effect upon the date thereof and the series of adjustments leading to such Warrant Price.

ARTICLE
3.REPRESENTATIONS AND COVENANTS OF THE COMPANY.

3.1Representations and Warranties.The Company represents and warrants to the Holder as follows:



3.2Notice of Certain Events.If the Company proposes at any time (a) to declare any dividend or
distribution upon any of its stock, whether in cash, property, stock, or other securities and whether or not a regular cash dividend; (b) to offer for sale additional shares of any class or
series of the Company's stock; (c) to effect any reclassification or recapitalization of any of its stock; (d) to merge or consolidate with or into any other corporation, or sell, lease,
license, or convey all or substantially all of its assets, or to liquidate, dissolve or wind up; or (e) offer holders of registration rights the opportunity to participate in an underwritten
public offering of the company's securities for cash, then, in connection with each such event, the Company shall give Holder: (1) at least 10 days prior written notice of the date on
which a record will be taken for such dividend, distribution, or subscription rights (and specifying the date on which the holders of common stock will be entitled thereto) or for determining rights
to vote, if any, in respect of the matters referred to in (c) and (d) above; (2) in the case of the matters referred to in (c) and (d) above at least 10 days
prior written notice of the date when the same will take place (and specifying the date on which the holders of common stock will be entitled to exchange their common stock for securities or other
property deliverable upon the occurrence of such event); and (3) in the case of the matter referred to in (e) above, the same notice as is given to the holders of such registration
rights.

3.3Registration Under Securities Act of 1933, as amended.The Company agrees that the Shares or, if the Shares
are convertible into common stock of the Company, such common stock, shall have certain incidental, or "Piggyback," registration rights pursuant to and as set forth in the Company's Investor Rights
Agreement or similar agreement. The provisions set forth in the Company's Investors' Right Agreement or similar agreement relating to the above in effect as of the Issue Date may not be amended,
modified or waived without the prior written consent of Holder unless such amendment,

4

---

modification
or waiver affects the rights associated with the Shares in the same manner as such amendment, modification, or waiver affects the rights associated with all other shares of the same
series and class as the Shares granted to the Holder.

3.4No Shareholder Rights.Except as provided in this Warrant, the Holder will not have any rights as a
shareholder of the Company until the exercise of this Warrant.

ARTICLE
4.REPRESENTATIONS, WARRANTIES OF THE HOLDER.    The Holder represents and warrants to the Company as follows:

4.1Purchase for Own Account.This Warrant and the securities to be acquired upon exercise of this Warrant by
the Holder will be acquired for investment for the Holder's account, not as a nominee or agent, and not with a view to the public resale or distribution within the meaning of the Act. Holder also
represents that the Holder has not been formed for the specific purpose of acquiring this Warrant or the Shares.

4.2Disclosure of Information.The Holder has received or has had full access to all the information it
considers necessary or appropriate to make an informed investment decision with respect to the acquisition of this Warrant and its underlying securities. The Holder further has had an opportunity to
ask questions and receive answers from the Company regarding the terms and conditions of the offering of this Warrant and its underlying securities and to obtain additional information (to the extent
the Company possessed such information or could acquire it without unreasonable effort or expense) necessary to verify any information furnished to the Holder or to which the Holder has access.

4.3Investment Experience.The Holder understands that the purchase of this Warrant and its underlying
securities involves substantial risk. The Holder has experience as an investor in securities of companies in the development stage and acknowledges that the Holder can bear the economic risk of such
Holder's investment in this Warrant and its underlying securities and has such knowledge and experience in financial or business matters that the Holder is capable of evaluating the merits and risks
of its investment in this Warrant and its underlying securities and/or has a preexisting personal or business relationship with the Company and certain of its officers, directors or controlling
persons of a nature and duration that enables the Holder to be aware of the character, business acumen and financial circumstances of such persons.

4.4Accredited Investor Status.The Holder is an "accredited investor" within the meaning of Regulation D
promulgated under the Act.

4.5The Act.The Holder understands that this Warrant and the Shares issuable upon exercise or conversion hereof
have not been registered under the Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of the Holder's investment intent as
expressed herein. The Holder understands that this Warrant and the Shares issued upon any exercise or conversion hereof must be held indefinitely unless subsequently registered under the 1933 Act and
qualified under applicable state securities laws, or unless exemption from such registration and qualification are otherwise available.

ARTICLE
5.MISCELLANEOUS.

5.1Term:This Warrant is exercisable in whole or in part at any time and from time to time on or before the
Expiration Date.

5

---

5.2Legends.This Warrant and the Shares (and the securities issuable, directly or indirectly, upon conversion
of the Shares, if any) shall be imprinted with a legend in substantially the following form:



5.3Compliance with Securities Laws on Transfer.This Warrant and the Shares issuable upon exercise of this
Warrant (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) may not be transferred or assigned in whole or in part without compliance with applicable federal
and state securities laws by the transferor and the transferee (including, without limitation, the delivery of investment representation letters and legal opinions reasonably satisfactory to the
Company, as reasonably requested by the Company). The Company shall not require Holder to provide an opinion of counsel if the transfer is to Silicon Valley Bancshares (Holder's parent company) or any
other
affiliate of Holder. Additionally, the Company shall also not require an opinion of counsel if there is no material question as to the availability of current information as referenced in
Rule 144(c), Holder represents that it has complied with Rule 144(d) and (e) in reasonable detail, the selling broker represents that it has complied with Rule 144(f), and
the Company is provided with a copy of Holder's notice of proposed sale.

5.4Transfer Procedure.Upon receipt by Holder of the executed Warrant, Holder will transfer all of this Warrant
to Silicon Valley Bancshares, Holder's parent company, by execution of an Assignment substantially in the form of Appendix 2. Subject to the provisions of Article 5.3 and upon providing
Company with written notice, Silicon Valley Bancshares and any subsequent Holder may transfer all or part of this Warrant or the Shares issuable upon exercise of this Warrant (or the Shares issuable
directly or indirectly, upon conversion of the Shares, if any) to any transferee, provided, however, in connection with any such transfer, Silicon Valley Bancshares or any subsequent Holder will give
the Company notice of the portion of the Warrant being transferred with the name, address and taxpayer identification number of the transferee and Holder will surrender this Warrant to the Company for
reissuance to the transferee(s) (and Holder if applicable). The Company may refuse to transfer this Warrant or the Shares to any person who directly competes with the Company, unless, in either case,
the stock of the Company is publicly traded.

5.5Notices.All notices and other communications from the Company to the Holder, or vice versa, shall be deemed
delivered and effective when given personally or mailed by first-class registered or certified mail, postage prepaid, at such address as may have been furnished to the Company or the Holder, as the
case may (or on the first business day after transmission by facsimile) be, in writing by the Company or such holder from time to time. Effective upon receipt of the fully executed Warrant and the
initial transfer described in Article 5.4 above, all notices to the Holder shall be addressed as

6

---

follows
until the Company receives notice of a change of address in connection with a transfer or otherwise:

Silicon Valley Bancshares
Attn: Treasury Department
3003 Tasman Drive, HA 200
Santa Clara, CA 95054
Telephone: 408-654-7400
Facsimile: 408-496-2405


Notice
to the Company shall be addressed as follows until the Holder receives notice of a change in address:

Sento Corporation
Attn: _______________________________
808 East Utah Valley Drive
American Fork, Utah 84003
Telephone: _______________________________
Facsimile: _______________________________


5.6Waiver.This Warrant and any term hereof may be changed, waived, discharged or terminated only by an
instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought.

5.7Attorney's Fees.In the event of any dispute between the parties concerning the terms and provisions of this
Warrant, the party prevailing in such dispute shall be entitled to collect from the other party all costs incurred in such dispute, including reasonable attorney's fees.

5.8Automatic Conversion upon Expiration.In the event that, upon the Expiration Date, the fair market value of
one Share (or other security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above is greater than the Exercise Price in effect on such date, then this Warrant
shall automatically be deemed on and as of such date to be converted pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been
exercised or converted, and the Company shall promptly deliver a certificate representing the Shares (or such other securities) issued upon such conversion to the Holder.

5.9Counterparts.This Warrant may be executed in counterparts, all of which together shall constitute one and
the same agreement.

7

---

5.10Governing Law.This Warrant shall be governed by and construed in accordance with the laws of the State of
California, without giving effect to its principles regarding conflicts of law.

|"COMPANY"           |                                                    |  |       
|------------------- | -------------------------------------------------- |  | ------
|SENTO CORPORATION   |                                                    |  |       
|By:                 |                                                    |  | By:   
|Name:               | (Print)                                            |  | Name: 
|Title:              | Chairman of the Board, President or
Vice President |  | Title:
|"HOLDER"            |                                                    |  |       
|SILICON VALLEY BANK |                                                    |  |       
|By:                 |                                                    |  |       
|Name:               | (Print)                                            |  |       
|Title:              |                                                    |  |       

8

---

APPENDIX 1NOTICE OF EXERCISE

1.     Holder
elects to purchase                        shares of the
Common/Series            Preferred [strike one] Stock
of                        pursuant to
the terms of the attached Warrant, and tenders payment of the purchase price of the shares in full.



1.     Holder
elects to convert the attached Warrant into Shares/cash [strike one] in the manner specified in the Warrant. This conversion is exercised
for                        of the Shares covered by the Warrant.

[Strike
paragraph that does not apply.]

2.     Please
issue a certificate or certificates representing the shares in the name specified below:

Holders Name



(Address)

3.     By
its execution below and for the benefit of the Company, Holder hereby restates each of the representations and warranties in Article 4 of the Warrant as the
date hereof.

| |  | HOLDER:
| |  | -------
| |  |        
| |  | By:    
| |  |        
| |  | Name:  
| |  |        
| |  | Title: 
| |  |        
| |  | (Date):
| |  |        

9

---

APPENDIX 2ASSIGNMENT

For value received, Silicon Valley Bank hereby sells, assigns and transfers unto

Name:
Silicon Valley BancsharesAddress:
3003 Tasman Drive (HA-200)
Santa Clara, CA 95054Tax ID:
91-1962278




| |  | SILICON VALLEY BANK
| |  | -------------------
| |  | By:                
| |  |                    
| |  | Name:              
| |  |                    
| |  | Title:             
| |  |                    

Date:
[insert Issue Date]

By
its execution below, and for the benefit of the Company, Silicon Valley Bancshares makes each of the representations and warranties set forth in Article 4 of the Warrant as of the date
hereof.

| |  | SILICON VALLEY BANCSHARES
| |  | -------------------------
| |  | By:                      
| |  |                          
| |  | Name:                    
| |  |                          
| |  | Title:                   
| |  |                          

10

---

QuickLinks