Ariba to Present at Avolent Executive Summit on eBusiness.

Company to Share Vision and Strategies for Leveraging Spend Management to Drive Value From Procurement Through Payment

SUNNYVALE, Calif. -- Every year, $500 billion in corporate profits are lost due to inefficiencies. Next week, Christine Crandell, vice president of marketing of Ariba([R]), Inc. (Nasdaq:ARBA), the leading spend management solutions provider, will discuss ways in which companies can leverage spend management to reduce this loss at the Avolent Executive Summit. An exclusive, three-day forum hosted by Avolent, the leading application software provider for Interactive Self-Service Electronic Billing and Payment, the event will take place November 29 through December 1 at the Fairmont Sonoma Mission Inn in Napa Valley, California.

"Spend management is without a doubt one of the fastest, most efficient ways to improve profits and drive competitive advantage. Yet many companies are missing out because they have failed to put in place the people, processes and technology necessary to succeed," Ms. Crandell said. "With the right spend management solutions, companies can identify, acquire, access, provision and manage the resources needed to lower their costs and improve their ability to compete in global markets."

Ms. Crandell will share insights and best practices designed to help companies of all types and sizes understand how to design and execute effective spend management initiatives that deliver results during several sessions throughout the event.

"eBusiness has fundamentally changed the way that business is done globally," said Brian Valente, senior vice president of marketing for Avolent. "As the creator and leader of spend management, Ariba has played a critical role in this transformation, and we look forward to the company sharing its expertise and insight on rising trends and tactics that attendees of our summit can leverage to take their initiatives to the next level."

To learn more about the Avolent Executive Summit or to register, please visit: http://www.avolent.com/ExecSummit2006.htm.

About Ariba, Inc.

Ariba, Inc. is the leading provider of spend management solutions to help companies realize rapid and sustainable bottom line results. Successful companies around the world in every industry use Ariba Spend Management[TM] software and services. Ariba can be contacted in the U.S. at 1.650.390.1000 or at www.ariba.com.

Copyright [c] 1996 - 2006 Ariba, Inc.

Ariba, the Ariba logo, AribaLIVE and SupplyWatch are registered trademarks of Ariba, Inc. Ariba Spend Management, Ariba Spend Management. Find it. Get it. Keep it., Ariba. This is Spend Management, Ariba Solutions Delivery, Ariba Analysis, Ariba Buyer, Ariba Category Management, Ariba Category Procurement, Ariba Contract Compliance, Ariba Contracts, Ariba Contract Management, Ariba Contract Workbench, Ariba Data Enrichment, Ariba eForms, Ariba Electronic Invoice Presentment and Payment, Ariba Invoice, Ariba Sourcing, Ariba Spend Visibility, Ariba Travel and Expense, Ariba Procure-to-Pay, Ariba Workforce, Ariba Supplier Network, Ariba Supplier Connectivity, Ariba Supplier Performance Management, Ariba PunchOut, Ariba QuickSource, PO-Flip, Ariba Settlement, Ariba Spend Management Knowledge Base, Ariba Ready, Ariba Supply Lines, Ariba Supply Manager, Ariba LIVE and It's Time for Spend Management are trademarks or service marks of Ariba, Inc. Ariba Proprietary and Confidential. All rights reserved. Patents pending. 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; long and unpredictable sales cycles and the deferrals of anticipated orders; declining economic conditions; inability to control costs; changes in the company's pricing or compensation policies; significant fluctuations in our stock price; the outcome of and costs associated with pending or potential future regulatory or legal proceedings; the impact of our acquisitions, including the disruption or loss of customer, business partner, supplier or employee relationships; and the level of costs and expenses incurred by Ariba as a result of such transactions. 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 filed December 7, 2005 and in its Form 10-Q filed August 9, 2006.