ART TECHNOLOGY GROUP, INC. AMENDED AND RESTATED 1996 STOCK OPTION PLAN

Exhibit 99.1

As adopted by the
Board of Directors
on April 19, 2007

ART TECHNOLOGY GROUP, INC.

AMENDED AND RESTATED 1996 STOCK OPTION PLAN

     1.  Purpose . The purpose of this Amended and Restated 1996 Stock Option Plan (the “Plan”) of Art Technology Group, Inc., a Delaware corporation (the “Company”), is to advance the interests of the Company’s stockholders by enhancing the Company’s ability to attract, retain and motivate persons who are expected to make important contributions to the Company and by providing such persons with equity ownership opportunities and performance-based incentives that are intended to better align their interests with those of the Company’s stockholders. Except where the context otherwise requires, the term “Company” shall include any of the Company’s present or future parent or subsidiary corporations as defined in Section 424(e) or (f) of the Internal Revenue Code of 1986, as amended, and any regulations promulgated thereunder (the “Code”) and any other business venture (including any joint venture or limited liability company) in which the Company has a controlling interest, as determined by the Board of Directors of the Company (the “Board”).

     2.  Eligibility . All of the Company’s employees, officers, directors, consultants and advisors are eligible to receive options, stock appreciation rights, restricted stock and other stock-based awards (each, an “Award”) under the Plan. Each person who receives an Award under the Plan is deemed a “Participant.”

     3.  Administration and Delegation .

          (a)  Administration by Board . The Plan will be administered by the Board. The Board shall have authority to grant Awards and to adopt, amend and repeal such administrative rules, guidelines and practices relating to the Plan as it shall deem advisable. The Board may correct any defect, supply any omission or reconcile any inconsistency in the Plan or any Award in the manner and to the extent it shall deem expedient to carry the Plan into effect (including the interpretation and implementation of Section 11(g)) and it shall be the sole and final judge of such expediency. All decisions by the Board shall be made in the Board’s sole discretion and shall be final and binding on all persons having or claiming any interest in the Plan or in any Award. No director or person acting pursuant to the authority delegated by the Board shall be liable for any action or determination relating to or under the Plan made in good faith.

          (b) Appointment of Committees . To the extent permitted by applicable law, the Board may delegate any or all of its powers under the Plan to one or more committees or subcommittees of the Board (a “Committee”). All references in the Plan to the “Board” shall mean the Board or a Committee of the Board or the officers referred to in Section 3(c) to the

extent that the Board’s powers or authority under the Plan have been delegated to such Committee or officers.

          (c)  Delegation to Officers . To the extent permitted by applicable law, the Board may delegate to one or more officers of the Company the power to grant Awards to employees or officers of the Company or any of its present or future subsidiary corporations and to exercise such other powers under the Plan as the Board may determine, provided that the Board shall fix the terms of the Awards to be granted by such officers (including the exercise price of such Awards, which may include a formula by which the exercise price will be determined) and the maximum number of shares subject to Awards that the officers may grant; provided further that no officer shall be authorized to grant Awards to any “executive officer” of the Company (as defined by Rule 3b-7 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) or to any “officer” of the Company (as defined by Rule 16a-1 under the Exchange Act).

     4.  Stock Available for Awards .

          (a)  Number of Shares . Subject to adjustment under Section 9, Awards may be made under the Plan for up to 25,600,000 shares of common stock, $0.01 par value per share, of the Company (the “Common Stock”). If any Award expires or is terminated, surrendered or canceled without having been fully exercised or is forfeited in whole or in part (including as the result of shares of Common Stock subject to such Award being repurchased by the Company at the original issuance price pursuant to a contractual repurchase right) or results in any Common Stock not being issued, the unused Common Stock covered by such Award shall again be available for the grant of Awards under the Plan, subject, however, in the case of Incentive Stock Options (as hereinafter defined), to any limitations under the Code. Shares issued under the Plan may consist in whole or in part of authorized but unissued shares or treasury shares. Solely for the purpose of applying this limitation (and not for purposes of Section 4(b) below), each Option (each as hereinafter defined) granted under this Plan shall reduce the number of shares available for grant by one share for every one share granted, each SAR (each as hereinafter defined) granted under this Plan shall reduce the number of shares available for grant by one share for every one share underlying the SAR, and each Award authorized under this Plan after April 5, 2007, other than an Option or SAR, shall reduce the number of shares available by 1.24 shares for every one share granted.

          (b)  Section 162(m) Per-Participant Limit . Subject to adjustment under Section 9, the maximum number of shares of Common Stock with respect to which Awards may be granted to any Participant under the Plan shall be 1,000,000 per calendar year. For purposes of the foregoing limit, the combination of an Option in tandem with an SAR shall be treated as a single Award. The per-Participant limit described in this Section 4(b) shall be construed and applied consistently with Section 162(m) of the Code or any successor provision thereto, and the regulations thereunder (“Section 162(m)”).

     5.  Stock Options .

          (a) General . The Board may grant options to purchase Common Stock (each, an “Option”) and determine the number of shares of Common Stock to be covered by each

Option, the exercise price of each Option and the conditions and limitations applicable to the exercise of each Option, including conditions relating to applicable federal or state securities laws, as it considers necessary or advisable. An Option that is not intended to be an Incentive Stock Option (as hereinafter defined) shall be designated a “Nonstatutory Stock Option.”

          (b)  Incentive Stock Options . An Option that the Board intends to be an “incentive stock option” as defined in Section 422 of the Code (an “Incentive Stock Option”) shall only be granted to employees of Art Technology Group, Inc., any of Art Technology Group, Inc.’s present or future parent or subsidiary corporations as defined in Section 424(e) or (f) of the Code, and any other entities the employees of which are eligible to receive Incentive Stock Options under the Code, and shall be subject to and shall be construed consistently with the requirements of Section 422 of the Code. The Company shall have no liability to a Participant, or any other party, if an Option (or any part thereof) that is intended to be an Incentive Stock Option is not an Incentive Stock Option or for any action taken by the Board pursuant to Section 10(f), including the conversion of an Incentive Stock Option to a Nonstatutory Stock Option.

          (c)  Exercise Price . The Board shall establish the exercise price of each Option and specify such exercise price in the applicable option agreement, provided, however, that the exercise price of any Option shall not be less than the fair market value per share of the Common Stock as of the date of option grant.

          (d)  Duration of Options . Each Option shall be exercisable at such times and subject to such terms and conditions as the Board may specify in the applicable option agreement, provided, however, that no Option shall be exercisable more than ten (10) years after the date the Option is granted.

          (e)  Exercise of Options . Options may be exercised by delivery to the Company of a written notice of exercise signed by the proper person or by any other form of notice (including electronic notice) approved by the Board together with payment in full as specified in Section 5(f) for the number of shares for which the Option is exercised.

          (f)  Payment Upon Exercise . Common Stock purchased upon the exercise of an Option granted under the Plan shall be paid for as follows:

               (1) in cash or by check, payable to the order of the Company;

               (2) except as the Board may otherwise provide in an option agreement, by (A) delivery of an irrevocable and unconditional undertaking by a creditworthy broker to deliver promptly to the Company sufficient funds to pay the exercise price and any required tax withholding or (B) delivery by the Participant to the Company of a copy of irrevocable and unconditional instructions to a creditworthy broker to deliver promptly to the Company cash or a check sufficient to pay the exercise price and any required tax withholding or (C) with the consent of the Board, by reducing the number of shares of Common Stock otherwise issuable to the optionee upon exercise of the Option by a number of shares of Common Stock having a fair market value equal to such aggregate exercise price;

               (3) when the Common Stock is registered under the Securities Exchange Act of 1934 (the “Exchange Act”), by delivery of shares of Common Stock owned by the Participant valued at their fair market value as determined by (or in a manner approved by) the Board (“Fair Market Value”), provided (A) such method of payment is then permitted under applicable law, (B) such Common Stock, if acquired directly from the Company, was owned by the Participant at least six months prior to such delivery and (C) such Common Stock is not subject to any repurchase, forfeiture, unfulfilled vesting or other similar requirements;

               (4) to the extent permitted by applicable law and by the Board, by (A) delivery of a promissory note of the Participant to the Company on terms determined by the Board, with the understanding that no loans shall be made to directors or executive officers, or (B) payment of such other lawful consideration as the Board may determine; or

               (5) by any combination of the above permitted forms of payment.

          (g)  Substitute Options . In connection with a merger or consolidation of an entity with the Company or the acquisition by the Company of property or stock of an entity, the Board may grant Options in substitution for any options or other stock or stock-based awards granted by such entity or an affiliate thereof. Substitute Options may be granted on such terms as the Board deems appropriate in the circumstances, notwithstanding any limitations on Options contained in the other sections of this Section 5 or in Section 2.

          (h)  No Repricing of Options . Notwithstanding anything to the contrary in the Plan, the Company shall not engage in any repricing of Options or SARs granted under this Plan without further stockholder approval. For this purpose, the term “repricing” shall mean any of the following or other action that has the same effect: (i) lowering the exercise price of an Option or an SAR after it is granted, (ii) any other actions that is treated as a repricing under generally accepted accounting principles, or (iii) canceling an Option or an SAR at a time when its exercise price exceeds the fair market value of the underlying stock in exchange for another Option, SAR, restricted stock, or other equity of the Company, unless the cancellation and exchange occurs in connection with a merger, acquisition, spin-off, or similar corporate transaction (including any adjustment described in Section 9).

     6.  Stock Appreciation Rights .

          (a)  Nature . A Stock Appreciation Right (“SAR”) is an Award entitling the holder on exercise to receive an amount in cash or Common Stock or a combination thereof (such form to be determined by the Board) determined in whole or in part by reference to appreciation, from and after the date of grant, in the fair market value of a share of Common Stock, provided, however, that the exercise price of any SAR shall not be less than the fair market value per share of the Common Stock as of the date of the SAR Award. The date as of which such appreciation or other measure is determined shall be the exercise date unless another date is specified by the Board in the SAR Award.

          (b)  Grants . SARs may be granted in tandem with, or independently of, Options granted under the Plan.

               (1)  Tandem Awards . When SARs are expressly granted in tandem with Options: (A) the SAR will be exercisable only at such time or times, and to the extent, that the related Option is exercisable and will be exercisable in accordance with the procedure required for exercise of the related Option; (B) the SAR will terminate and no longer be exercisable upon the termination or exercise of the related Option, except that a SAR granted with respect to less than the full number of shares covered by an Option will not be reduced until the number of shares as to which the related Option has been exercised or has terminated exceeds the number of shares not covered by the SAR; (C) the Option will terminate and no longer be exercisable upon the exercise of the related SAR; and (D) the SAR will be transferable only with the related Option.

               (2)  Independent SARs . A SAR not expressly granted in tandem with an Option will become exercisable at such time or times, and on such conditions, as the Board may specify in the SAR Award.

          (c)  Exercise . A SAR may be exercised only by delivery to the Company of a writ