Ariba Schedules Second Quarter Fiscal Year 2004 Earnings Conference Call for Tuesday, April 27, 2004.

Business Editors/High-Tech Writers

SUNNYVALE, Calif.--(BUSINESS WIRE)--April 6, 2004

Ariba(R), Inc. (Nasdaq:ARBA), the leading Enterprise Spend Management (ESM) solutions provider, today announced that it will host a conference call on Tuesday, April 27 at 2:00 p.m. PDT/5:00 p.m. EDT to discuss the company's second quarter financial results for the fiscal year 2004. A news release with the company's financial results will be available after the close of the market on the same day.

To participate in the call via telephone:

Dial-in numbers: US/Canada Dial-In Number: [phone]
                 International/Local Dial-In Number: [phone]

Please dial-in ten minutes in advance to facilitate an on-time start.

To listen to the call via the Internet:

Please visit the investor relations section of our website at
www.ariba.com or login at www.vcall.com.

To listen to a replay of the call:

A replay of the conference call will be available on April 27 at
approximately 6:00 p.m. EDT. The replay will be available until
Wednesday, May 5, 2004.

Replay numbers: US/Canada Dial-In Number: [phone]
                International/Local Dial-In Number: [phone]
                Conference ID: 6656427

About Ariba, Inc.

Ariba, Inc. is the leading Enterprise Spend Management (ESM) solutions provider. Ariba helps companies develop and leverage spend management as a core competency to drive significant bottom line results. Ariba Spend Management software and services allow companies to align their organizations with a spend-centric focus and deploy closed-loop processes for increased efficiencies and sustainable savings. Ariba can be contacted in the U.S. at [phone] or at www.ariba.com.

Ariba and the Ariba logo are registered trademarks of Ariba, Inc. Ariba Spend Management, Ariba Analysis, Ariba Buyer, Ariba Category Management, Ariba Contracts, Ariba Travel & Expense, Ariba Workforce, Ariba Invoice, Ariba eForms, Ariba Enterprise Sourcing, Ariba Supplier Network, BPM Services, Power Sourcing, Total Spend Capture and PO-Flip are trademarks or service marks of Ariba, Inc. All other trademarks are property of their respective owners.

Ariba Safe Harbor 

Safe Harbor Statement under the Private Securities Litigation Reform Act 1995: Information and announcements in this release involve Ariba's expectations, beliefs, hopes, plans, intentions or strategies regarding the future and are forward-looking statements that involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Ariba as of the date of the release, and we assume no obligation to update any such forward-looking statements. These statements are not guarantees of future performance and actual results could differ materially from our current expectations. Factors that could cause or contribute to Ariba's operating and financial results to differ materially from its current expectations include, but are not limited to: delays in development or shipment of new versions of Ariba's products and services; lack of market acceptance of Ariba's existing or future products or services; inability to continue to develop competitive new products and services on a timely basis; introduction of new products or services by major competitors; the ability to attract and retain qualified employees; difficulties in assimilating acquired companies; the impact of recent workforce reductions on Ariba's operations; lengthening sales cycles and the deferrals of anticipated orders; declining economic conditions, including a recession; inability to control costs; changes in the company's pricing or compensation policies; inability to successfully manage a reduction in the company's workforce; significant fluctuations in our stock price; the outcome of legal proceedings relating to the restatement of our financial statements; the possibility that stockholders or regulatory authorities may initiate additional proceedings against Ariba and/or our officers and directors as a result of the restatements; the impact of acquiring Alliente and entering into an agreement to acquire FreeMarkets, including the disruption or loss of customer, business partner, supplier or employee relationships; the level of costs and expenses incurred by Ariba as a result of such transactions; and the level of professional fees and expenses incurred by Ariba in connection with its previously disclosed accounting review and associated regulatory and litigation proceedings. Factors and risks associated with its business, including a number of the factors and risks described above, are discussed in Ariba's Form 10-K/A filed January 28, 2004 and in its Form S-4 filed April 2, 2004.