Ariba Earns Additional WebTrust Seal for Spend Management Solutions.

Company's On-Demand Offerings, Hosted Applications and Ariba Supplier Network Continue to Meet Globally Recognized Standards for Security, Availability, Processing Integrity and Confidentiality

SUNNYVALE, Calif. -- Ariba, Inc. (Nasdaq:ARBA), the leading spend management solutions provider, today announced that it has received an updated WebTrust Seal of Assurance for Security, Availability, Processing Integrity and Confidentiality. The seal was issued following a thorough, independent examination by global professional services firm KPMG, and covers the full suite of Ariba's hosted spend management solutions and Ariba Supplier Network([TM]). Specific solutions certified include: Ariba Sourcing([TM]), Ariba Category Management([TM]), Ariba Analysis([TM]), On-Demand Basic and Professional versions of Ariba Sourcing([TM]), Ariba Contract Management([TM]), Ariba Spend Visibility([TM]), Ariba Procure-to-Pay([TM]), Ariba Travel and Expense([TM]) and Ariba Electronic Invoice Presentment and Payment([TM]), as well as Ariba Supplier Network. With this certification, Ariba's solutions adhere to the AICPA preferred standard for business continuity and disaster recovery over SAS 70. Ariba received its initial WebTrust certification in 2001 and has been re-certified twice annually since.

"With more than 550 of the world's leading companies relying on Ariba to manage their spend on a daily basis, it is absolutely imperative that we provide solutions that perform at the highest levels of quality on a round-the-clock basis," said Dan Grillo, Director of Hosting Services, Ariba. "As our latest WebTrust seal demonstrates, we are completely committed to maintaining the availability and security of our solutions to ensure that our customers have access to the technology, services and support they need when they need it to drive their strategic goals."

A joint effort of the American Institute of Certified Public Accountants (AICPA) and the Canadian Institute of Chartered Accountants (CICA), the WebTrust program provides a set of globally recognized standards designed to address consumer and business concerns over the privacy and security of information exchanged online. To earn a WebTrust seal, e-commerce providers must demonstrate that their systems are protected from unauthorized access and use, are available as intended, process transactions and data as intended and maintain the confidentiality of member data and information.

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. 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 1, 2006.