Document:

Amendment to Services Agreement

 Exhibit 10.5 

CONFIDENTIAL TREATMENT 
 AMENDMENT TO SERVICES AGREEMENT 
 AMENDMENT,
made as of the 18th day of July, 2007, to that certain
SERVICES AGREEMENT (the “Agreement”), dated March 3, 2005 by and between Kayak Software Corporation, a Delaware corporation with its address at 27 Ann Street, Norwalk, CT 06854 (“Kayak”) and ITA Software, Inc., a Delaware
corporation with its address at 141 Portland Street, 7th
Floor, Cambridge, MA 02139 (“ITA”). 
 WHEREAS, the Agreement provides for Kayak to submit Queries about Participating
Carriers to the ITA Software (all, as defined in the Agreement) and receive responses therefrom; and 
 WHEREAS, ITA and Kayak
wish to amend the Agreement; 
 NOW, THEREFORE, in consideration of the foregoing, the parties hereby agree as follows: 

 

	 	1.	DEFINITIONS 

Section 1 of the Agreement is hereby amended to include the following definitions: 

 

	 	(r)	“Domestic Kayak Search” means a request from an Online User to Kayak for information about airfare for an itinerary that includes only origins, stops and
destinations that are Domestic Locations and that is based upon a point of sale that is a Domestic Location. 

  

	 	(s)	“International Kayak Search” means any request from an Online User to Kayak that is not a Domestic Kayak Search. 

 

	 	(t)	“ITA Customer” means a party that has entered into an agreement with ITA for the use of the ITA Software. ITA may inform Kayak from time to time of the
identity of ITA Customers. 

  

	 	(u)	 “Referral” means any instance in which an Online User is redirected to any web site (such as, but not limited to an airline site) or travel
agent in a user session that includes a result generated by the ITA Software in response to a Query (irrespective of whether the Query was a Domestic Query or and International Query). For the avoidance of doubt, a “Referral” shall also
include Referrals to airline web sites or other web sites or parties from a result or itinerary that was not generated by the ITA Software (i.e., to a carrier for which ITA may not have data, or for an itinerary which Kayak may have generated
from a source other than the ITA Software e.g., by “screen-scraping” another web site), so long as the user session in question also included a Query to the ITA Software, Notwithstanding the foregoing, “Referral” shall not
include instances in which an Online User is redirected to any website from an advertisement, 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

	 	 
promotion, link, pointer, sponsorship, or similar promotional service (collectively, “Advertisements”) which may appear on the same page as a list of itineraries or trips even if such
list includes one or more results generated by the ITA Software, so long as (1) in any list (or other arrangement of information, which, for the avoidance of doubt, can span one or more pages) that contains a result generated by the ITA
Software, each and every result contained therein contains a prominent clickable link, readily apparent to the Online User, which can lead to a Referral, (2) the Advertisement is not visually attached, connected or related to any result or
results in a list (or other arrangement of information) that contains a result generated by the ITA Software (i.e. Advertisements must be on a clearly distinct section or portion of the screen), (3) the Advertisement does not contain any
flight or itinerary specific information (e.g. flight number, carrier, fare, flight times) related to the Online User’s Query (regardless of whether or not such flight specific information was returned by the ITA Software).

  

	 	2.	SERVICES TO BE PROVIDED 

  

	 	A.	Section 2(a) of the Agreement is hereby deleted and replaced with the following: 

Description of Services. ITA agrees that Kayak is granted a nonexclusive right to access the ITA Software and submit Queries about
Participating Carriers to the ITA Software, and that ITA will operate the ITA Software and return responses about Participating Carriers to Kayak; such Queries and responses to be in accordance with the Documentation. [    ]* ITA
will not be obligated to return responses that include any carriers other than Participating Carriers. Except as provided herein and in Exhibit B, Kayak will not be obligated to pay any service, license or other fees for the rights granted hereby.
Kayak may use any response returned by the ITA Software to provide travel planning and related services to the Online User that submitted the Query within a one hour user session, and for no other purpose. Notwithstanding the foregoing limitation,
Kayak may retain the single best fare displayed to an Online User for a particular itinerary in order to populate a cache containing the single lowest fare that has been displayed on the Site for a particular origin and destination pair in the
preceding seven days (the “Permitted Cache”). The Permitted Cache may contain only origin and destination pairs and fares, and Kayak may retain no more than one fare for each origin and destination pair on a given pair of travel dates.
Information from the Permitted Cache may be used solely for promotional activities calculated to lead to Referrals. Under no circumstances may Kayak respond to a Domestic or International Kayak Search with information from the Permitted Cache. No
other caching of information returned by the ITA Software, whether received directly from ITA Software, or indirectly from another ITA Customer, shall be permitted. The foregoing provisions will apply to any third party (other than an Online User)
which Kayak permits to perform Queries to the ITA Software, whether directly under this Agreement or pursuant to any agreement between Kayak and another ETA Customer. 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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	 	B.	The following subsection (g) is hereby added to Section 2 of the Agreement; 

(g) White Label Sites. Kayak may not allow [    ]*, or another entity of similar size in the
search field or similar prominence in the search field, to submit Queries to the ITA Software, unless the following conditions are fulfilled (a site fulfilling such conditions is referred to as a “White Label Site”, provided that for the
purposes of the following, the “White Label Site” will be deemed to be the web site or page where the search results generated by the ITA Software are displayed, currently described in Kayak’s agreements with its partners as a
“Co-Branded Site”): 
 (i) Kayak must provide the White Label Site with a product which incorporates
both QPX shopping and the other functionality offered by Kayak (i.e., data from other sites, the ability to generate Referrals), and that consists of materially greater functionality than that of QPX alone; 

(ii) the White Label Site must not contain any air-related functionality other than that provided by Kayak, and must
otherwise have substantially the same functionality as the Kayak site, but be branded with both the Kayak and the other party’s brand; 
 (iii) Queries will not be submitted to QPX directly from the White Label Site, but instead will go through the Kayak presentation layer code (i.e., all white label customers will gain access to
Kayak via a Kayak-provided API); 
 (iv) the White Label Site must not contain any files related to air
functionality that are not supplied by Kayak other than static files such as .gif or .jpeg files; i.e., the white label customer may customize only the “front end” appearance of the White Label Site; 

(v) Upon ITA’s request, Kayak will provide ITA a list of third parties with whom Kayak has entered into arrangements
to provide a White Label Site; and 
 (vi) The other restrictions set forth in this Agreement with respect to the
use of the ITA Software will apply to any White Label Site as well as to Kayak, and Kayak agrees that either (A) Kayak will be liable to ITA for violation by the other party of such restrictions or (B) it will enter into an enforceable
agreement with respect to such restrictions with the other party to which Kayak is providing the White Label Site, and ITA will be the intended third party beneficiary thereof. 

 

	 	3.	FEES AND EXPENSES 

  

	 	A.	Section 4(d) of the Agreement (“Audit Rights”) is hereby deleted. 

 

	 	B.	Section 4(c) of the Agreement (“Payment Terms”) is hereby deleted. 

 

	 	C.	Section 4(b) of the Agreement is hereby deleted and replaced with the following: 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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 (b) Service Fee. Kayak shall pay for use of the ITA Software on a
[    ]* basis, subject to a [    ]* as set forth below: 
 (i) Minimum
Service Fee. As of January 1, 2007, Kayak shall pay a minimum service fee for the Software (the “Minimum Service Fee”) in the amount of [    ]* The Minimum Service Fee shall then increase at the beginning of
each subsequent calendar year as follows: 
 On January 1, 2008 the Minimum Service Fee shall become
[    ]*; 
 On January 1, 2009 the Minimum Service Fee shall become
[    ]*; 
 On January 1, 2010 the Minimum Service Fee shall become
[    ]*. 
 (ii) [    ]*. As of July 1, 2007, Kayak will pay
ITA for its use of the ITA Software [    ]* according to the following schedule: 
  

			
	 In any Agreement Month, [    ]*
	  	The [    ]*
Fee shall be:
		
	 [    ]*
	  	[    ]*
		
	 [    ]*
	  	[    ]*
		
	 [    ]*
	  	[    ]*
		
	 [    ]*
	  	[    ]*

 (iii) [    ]*. Kayak agrees that it will neither use the ITA Software nor enter into commercial arrangements that contemplate or permit the use of the ITA Software other than
for activities that are intended to lead to Referrals [    ]* The pricing set forth herein is based upon [    ]* Accordingly, and without limiting the foregoing, in the event that [    ]*
shall pay [    ]*, which fee shall be calculated according to the following equation: 
  

																															
		 	 	[    	]* 	 				  	 	[	  	  				 		  	 
	]
	  
	  		  	 	[    	]* 	 	
		 				 				  	  	 		  	  		  				 	
										
		 				 				  				  	 	[    	]* 	 		  				  		  				 	
										
		 				 				  				  	 	[    	]* 	 		  				  		  				 	
										
	[    ]*	 				 				  				  				 		  				  		  				 	

 (iv) Reporting and Payment Terms. No later than fifteen days after the end
of each Agreement Month, Kayak will report to ITA the total number of Queries done, Referrals made and the Actual Referral Percentage for such Agreement Month. 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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Concurrent with such reporting, Kayak shall pay the greater of [    ]* and the [    ]* for that Agreement Month. 

(v) Audit Rights. ITA will have the right, on not more than one occasion during each Agreement Year, to retain a
third-party accounting firm to audit the number of Referrals and the Actual Referral Percentage reported by Kayak pursuant to this Section 4, in which event, Kayak will make available to such firm the records upon which such certifications were
based. The expense of any such audit will be borne by ITA, except that in the event such auditors determine that the number of Referrals was underreported by Kayak by more than 10%, or that the Actual Referral Percentage reported by Kayak was
inflated, then Kayak shall bear the cost of the audit. 
  

	 	4.	TERM 

 Section 5(a) of the Agreement
is hereby amended to read: 
 Term of Agreement. This Agreement shall terminate on December 31, 2011. 

 

	 	5.	MISCELLANEOUS 

 The following subsection (j) is hereby added to Section 13 of the Agreement (“Miscellaneous”). 
  

	 	(j)	Additional Service Commitments. 

 i. [    ]*. 
 ii. In addition to the foregoing, and in
addition to the service levels set forth in Exhibit B, in the event that Kayak determines, in good faith, (A) that there has been a material degradation in the performance of the ITA Software (measured against the preceding three-month period),
(B) that said degradation has caused or threatens to cause a material adverse impact to Kayak’s business ((A) and (B) shall collectively be referred to as a “Material Degradation”), and (C) that ITA, in the performance
of its obligations hereunder has not adequately addressed said Material Degradation, ITA will, upon written notice of the foregoing, make available a “C” level executive (i.e. CEO, CCO, COO, etc.) to meet with Kayak, which executive
will make all reasonable business efforts to resolve the issue to Kayak’s reasonable satisfaction. For the avoidance of doubt, if ITA determines, in good faith, that the cause of the Material Degradation is (X) beyond ITA’s reasonable
control, and/or (Y) such that other customers of ITA or of competitive pricing systems are experiencing a similar degradation to the Material Degradation, the matter shall be deemed to not be subject to the Additional Service Commitment set
forth in this Section 13(j)(ii). 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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	 	6.	EFFECT ON AGREEMENT 

 Except as specifically amended hereby, the Agreement shall remain in all respects in full force and effect. 
  

	 	7.	COUNTERPARTS 

 This Amendment may be signed in one or more counterpart copies, all of which together shall constitute one Agreement and each of which shall constitute an original. 

IN WITNESS WHEREOF, the parties have hereunto set their hands and seals as of the date first above written. 

 

			
	KAYAK SOFTWARE CORPORATION
		
	By:	 	 /s/ Keith Melnick

		 	Keith Melnick, EVP Corporate Development
	
	ITA SOFTWARE, INC.
		
	By:	 	 /s/ Jeremy Wertheimer

		 	Jeremy Wertheimer, President

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

 6Second Amendment to Sevices Agreement

 Exhibit 10.7 

CONFIDENTIAL TREATMENT 
 SECOND AMENDMENT TO SERVICES AGREEMENT 
 SECOND
AMENDMENT, made as of the 1st day of January, 2009, to that certain SERVICES AGREEMENT (as amended to date, the “Agreement”), dated March 3, 2005 by and between Kayak Software Corporation., a Delaware corporation with its address. at
55 N. Water Street, Suite I ,Norwalk, CT 06854 (“Kayak”) and ITA Software, Inc., a Delaware corporation with its address at 141 Portland Street, 7th Floor, Cambridge, MA 02139 (“ITA”). 

WHEREAS, the Agreement provides for Kayak to submit Queries about Participating Carriers to the ITA Software (all, as defined in the
Agreement) and receive responses there from; and 
 WHEREAS, the Agreement was amended on July 18, 2007 and pursuant to a
letter agreement on March 11, 2008; and 
 WHEREAS, ITA and Kayak wish to further amend the Agreement; 

NOW, THEREFORE, in consideration of the foregoing, the parties hereby agree as follows; 

1. DEFINITIONS 
 A. Section 1(m) of the Agreement is hereby deleted and replaced with the following: 
 (m) “Query” means either a “FareSearch”, a “LowFareSearch”, or a “ScheduleSearch” (as such terms are defined in the Documentation) by an Online User to the ITA
Software; provided, that “Query” will exclude (i) test queries posed by Kayak to the Licensed Software, (ii) queries posed to the Licensed Software by ITA in connection with its monitoring of the Licensed Software,
(iii) queries posed by any unauthorized automated or programmatic query tools (“Bot Queries”), provided that Kayak will use reasonable commercial efforts to prevent or block any such Bot Queries, and, provided further that any Bot
Queries in excess of [    ]* of Queries in any Agreement Month shall nevertheless be counted as Queries for that Agreement Month, and (iv) queries for which the ITA Software “times out” or otherwise returns no
answer, provided that, for the purposes of this Section I(m)(iii), the ITA Software shall be deemed to have returned an answer if it returns a solution indicating that there are no flights that meet the criteria of the query. “Query” will
also include the functionality known as “text rule lookup.” 
 B. Section 1 of the Agreement is hereby amended to
include the following definitions: 
 (v) “Basic Query” means any Query that is not part of a Split Query. 

(w) “Database Query” means a either a “FareSearch”, a LowFareSearch”, or a “ScheduleSearch” (as such
terms are defined in the Documentation) by Kayak to the ITA Software that is not a Domestic Kayak Search or International Kayak Search in which the ITA Software is asked to consider flight schedules for not more than one outbound calendar day and
one return calendar day. Database Queries must be tagged as such by Kayak in accordance with ITA’s reasonable instructions. 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

 (x) “Split Query” means any Domestic Kayak Search or International Kayak Search
for which Kayak poses more than one Query. For the avoidance of doubt, each Query in a Split Query must have substantially similar parameters (Le., search parameters which are set as described in the Documentation) as those supplied by the Online
User for the underlying Domestic Kayak Search or International Kayak Search. Split Queries must be tagged as such by Kayak in accordance with ITA’s reasonable instructions. 

2. SERVICES TO BE PROVIDED 
 A. Section 2(a) of the Agreement is hereby deleted and replaced with the following: 
 (a) Description of Services. ITA agrees that Kayak is granted a nonexelusive right to access the ITA Software and submit Queries about Participating Carriers to the ITA Software, and that ITA will
operate the ITA Software and return responses about Participating Carriers to Kayak; such Queries and responses to be in accordance with the Documentation. [    ]*. However, in the case of both Queries and Database Queries, ITA
will not be obligated to return responses that include any carriers other than Participating Carriers. Except as provided herein and in Exhibit B, Kayak will not be obligated to pay any service, license or other fees for the rights granted hereby.

 B. The following subsection (g) is hereby added to Section 2 of the Agreement: 

(g) Caching, Kayak may retain the origin and destination pairs, fares, dates and carrier names returned in response to Database
Queries and Queries (such retained information to be referred to herein as the “Permitted Cache”). Information from the Permitted Cache may be used solely for promotional activities reasonably calculated to lead to Queries. In connection
with the foregoing, but without limitation, information from the Permitted Cache may never be used, alone or in combination, (i) as though it is current information, (ii) to provide current air pricing or availability, or in any manner
that relates to current air pricing or availability, (iii) in a manner that might, in ITA’s reasonable discretion, be interpreted by a User to present fares, schedules or availability which are valid at the time of display, or (iv) in
a manner that might, in ITA’s reasonable discretion, enable a User to derive likely current fare, schedule or availability information, or replace or reduce the necessity for Queries. Additionally, any information from the Permitted Cache that
is shown to Online Users must include the date and time such information was first generated. No other caching of information returned by the ITA Software, whether received directly from ITA Software, or indirectly from another ITA Customer through
its use of the ITA Software, shall be permitted. 
 3. FEES AND EXPENSES 

Section 4 is hereby modified such that Section 4(b) (“Service Fee”)of the Agreement is deleted and replaced and
new Sections 4(c) and 4(d) are added as follows: 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
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 (b) Service Fee. Kayak shall pay for use of the ITA Software
[    ]*, subject to a monthly Minimum Service Fee as set forth below: 
 (i) Minimum Service Fee.
Kayak shall pay a minimum service fee for the Software (the “Minimum Service Fee”) in the amount of $500,000 per Agreement Month, against which the [    ]* accruing under Section 4(b)(ii) will be applied. As of
January 1, 2010 the Minimum Service Fee shall increase to $583,333 per Agreement Month. For the period January 1, 2012 through December 31, 2012, the Minimum Service Fee per Agreement Month shall be $583,333, until the aggregate of
Minimum Service Fees paid by Kayak to ITA in such calendar year reaches [    ]* that were payable with respect to calendar year 2011 (the “2012 Annual Maximum”). No Minimum Service Fee shall apply to any calendar month
after the 2012 Annual Maximum has been met. For the period January 1, 2013 through December 31, 2013, the Minimum Service Fee per Agreement Month shall be equal to one- twelfth of the number that is [    ]* that were
payable with respect to calendar year 2012, without regard to minimums. 
 (ii) [    ]* 

(B) [    ]*. 
 (C) Database Queries. The fee for Database Queries will be [    ]*. Additionally, in connection with the restriction set forth in Section 2(g) that information, from the
Permitted Cache be used solely for promotional activities reasonably calculated to lead to Queries, in the event that in a given Agreement Month, the number of Database Queries [    ]*, 

 

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

  

  
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 the parties agree to promptly negotiate an appropriate fee structure for such “excess” Database
Queries. In the event that, within thirty (30) days of the Agreement Month in which such Database Queries were performed, the parties are unable to come to agreement with respect to appropriate fees for excess Database Queries, then, for that
Agreement Month, in addition to the fees associated with Database Queries, Kayak will pay an additional surcharge for [    ]* in excess of its entitlement for that month equal to the blended effective rate for
[    ]* during the Agreement Month in question. 
 (D) “Null Set” Queries. 

(I) Definition. As used herein, a “Null Set Query” means a Query (other than a Database Query), which, because of the
exclusion by Kayak of specified airlines and/or of interline itineraries, returns no solutions, but which, had all airlines been permitted to be searched, and interline itineraries been permitted to be included, would have returned at least one
solution. For the avoidance of doubt, Null Set Queries shall not include Queries for which the ITA Software is unable to find any itineraries between the specified origin and destination on the specified date(s), or for which, because of
parameters set by an Online User, (for example, requesting only flights within a certain time window, or only non-stops) the ITA Software filters out solutions which would have otherwise been returned. 

(2) For the period January 1, 2009 through April 30, 2009, Null Set Queries will not be included in Basic or Split Queries
that are subject to the [    ]* set forth in Section 4(b)(ii); provided that in the event the number of Null Set Queries during any Agreement Month during such period exceeds [    ]* of the aggregate
number of Basic and Split Queries during such Agreement Month, any Null Set Queries in excess of [    ]* will be considered Basic or Split Queries, as appropriate, and will be subject to the applicable [    ]*
set forth in Section 4(b)(ii). Prior to April 30, 2009, Kayak will work with ITA to reduce the number of Null Set Queries, and will use its best commercial efforts to reduce querying by spiders and bots. 

(3) Following April 30, 2009, Kayak will be excused from the requirement to submit a Query to the ITA Software each lime an Online
User performs a Domestic Kayak Search (as set forth in Section 2(a), with respect to Queries which Kayak reasonably anticipates, based upon the origin and destination, will be Null Set Queries (“Excluded Queries”), so long as the
Excluded Queries comprise less than [    ]* of the aggregate number of Basic and Split Queries (i.e. to the extent that the Excluded Queries comprise [    ]* or more than the aggregate number of Basic and
Split Queries, such Queries will be counted as Basic Queries). Kayak will provide ITA, on a quarterly basis, with the list of origins and destinations which it is excluding based upon this Section 4(b)(iii)(C). If Kayak performs any queries
which it could have excluded as Excluded Queries under this paragraph, such queries will be considered as Basic Queries subject to the [    ]* set forth in Section 4(b)(ii). 

(c) Reporting and Payment Terms. 
 (1) Retrospective Adjustments. Kayak will report to ITA the number of Null Set Queries and Bot Queries for each Agreement Month from January through March 2009 

 

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
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in accordance with Section 7 of this Amendment. Kayak will report the number of Null Set Queries and Bot Queries performed in April, 2009 by no later than May 10, 2009. 

(2) No later than fifteen (15) days following the end of an Agreement Month, Kayak will certify to ITA the total
number of Excluded Queries and Bot Queries for that Agreement Month. ITA will invoice Kayak for all fees calculated in accordance with this Section 4, specifically noting on its invoices, the excess, if any, of [    ]* over
the Minimum Service Fee. Kayak will pay the amount invoiced no later than thirty (30) days from date of invoice. 
 (d)
Audit Rights. ITA will have the right, on not more than one occasion during each Agreement Year, to retain a third-party accounting firm to audit the number of Excluded Queries and Bot Queries certified by Kayak pursuant to this
Section 4, in which event, Kayak will make available to such firm records supporting such identifications. Kayak will have the right, on not more than one occasion during each Agreement Year, to retain a third-party accounting firm to audit the
number of Queries (including Split Queries, Database Queries and Basic Queries) reported by ITA pursuant to this Section 4, in which event, ITA, will make available to such firm the records upon which such certifications were based. The expense
of any such audit will be borne by the party requesting it, except that in the event such auditors determine that (i) more than 10% of purported Database Queries were mis-identified by Kayak then Kayak shall bear the cost of the audit, or
(ii) the number of Queries was over reported by ITA by more than 10%, then ITA shall bear the cost of the audit. 
 4.
DATA CENTER 
 As of the date hereof, in lieu of the charges for the Hardware described in Section 6.3.1 of Exhibit B,
the Data Center Fee shall be based upon the number of EUs operated by ITA for Kayak as follows: 
  

			
	 Number of EUs
	  	 Monthly Fee Per EU

	[    ]*	  	[    ]*

 (plus, in each
case, applicable CPI increases beginning January 1, 2010). The Data Center Fee shall be graduated; in other words, [    ]* regardless of any discounts that may apply to higher numbers of EUs). 

5. TERM 

Section 5(a) of the Agreement is hereby amended to read: 
 (a) Term of Agreement. This Agreement shall terminate on December 31, 2013. 
 6. EFFECT ON AGREEMENT 

  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
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 Except as specifically amended hereby, the Agreement shall remain in all respects in full
force and effect. 
 7. EFFECTIVE DATE 
 The terms hereof will become effective as of January 1, 2009. The parties agree that as of the date hereof the amount payable by Kayak to ITA comprises the following: 

(a) [    ]* in total license fees with respect to 2008 (based on an agreed-upon amount of [    ]*
in excess of the aggregate Minimum Service Fees for 2008, which agreed- upon amount represents an amount smaller than the amount originally invoiced by ITA, which reduction is based upon the parties’ agreement to enter into this Amendment), of
which [    ]* has been paid prior to the date hereof, and the balance has not been paid as of the date hereof. Of such remaining outstanding balance [    ]*, Kayak agrees to pay at least
[    ]* upon the execution or this Amendment and the remaining balance prior to April 30, 2009. 
 (b) [    ]* of invoices relating to Sidestep which ITA will promptly provide, which Kayak agrees to pay prior to April 30th 2009, 
 (c) [    ]* with respect to April 2009 (comprising Minimum Service Fees, data and hosting fees) which was due April 1, 2009 and which Kayak agrees to pay prior to April 30,
2009. 
 No later than April 15, 2009, Kayak will provide ITA with reports required under this Agreement with respect to the months of
January, February and March 2009. ITA will invoice any amounts due in excess of the Minimum Service Fees with respect to such months, and Kayak will pay such invoices promptly upon receipt thereof. 

8. COUNTERPARTS 
 This Amendment may be signed in one or more counterpart copies, all of which together shall constitute one Agreement and each of which shall constitute an original. 

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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 IN WITNESS WHEREOF, the parties have hereunto set their hands and seals as of the date first above written

  

			
	KAYAK SOFTWARE CORPORATION
		
	BY:	 	 /s/ Steve Hafner

		 	Steve Hafner 4/10/09
	
	ITA SOFTWARE, INC.
		
	BY:	 	 /s/ Jeremy Wertheimer

		 	Jeremy Wertheimer, President 4/14/09

  
  

	*	CONFIDENTIAL TREATMENT REQUESTED. OMITTED PORTIONS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED. 

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