Press Room: 2004

Keynote's Expertise in Streaming Media on Display at Streaming Media West in Santa Clara, California October 26

• Shai Berger, Leader of Streaming Perspective Team at Keynote Leads Panel of Industry Luminaries from Affiliate Computer Networks, Interactive Entertainment, Inc., Limelight Networks, and Shell IT International
• Panel Addresses the Challenges of Building In-house Streaming Media Networks Vs Outsourcing
• At Streaming Media, the Streaming Industry Intersects With the Business World

SAN MATEO, Calif., — October 13, 2004 — Keynote Systems (Nasdaq: KEYN), the worldwide leader in e-business performance management services, will underscore it's leadership in the streaming media industry when Shai Berger, general manager of streaming services at Keynote, takes to the stage to moderate a panel of streaming industry luminaries in session entitled, “Outsourcing Versus Building an In-House Streaming Media Infrastructure.” The panel will be held at the upcoming Streaming Media West show in Santa Clara, California on October 26 at 11:15 A.M.

Keynote Streaming Perspective® is the industry’s leading streaming measurement service by which many of the top media companies in the world measure, compare and assure the performance of audio and video streams to diagnose performance problems before they impact the end-user. Berger is a well-known expert in the field of multi-media online performance and his involvement in the industry from its earliest days has given him the expertise necessary to understand both the technical and economic issues that drive the use of streaming in the entertainment, educational and enterprise markets.

Berger will host the panel, which includes, Chris Ingram, Information Management Principal, Affiliated Computer Services, Emerson Dwellingham, CEO, Interactive Entertainment, Inc, David Rice, vice president sales and marketing, Limelight Networks, and Gerald Tyler, senior multimedia consultant, Shell IT International.

The panelists will discuss and demonstrate:

• How to determine the strategy an organization should take and why
• What to do once the decision is made
• How to review the overall satisfaction with the project

A description of the session can be found at http://www.streamingmedia.com/west/program/session.asp?id=691

The Streaming Media conference is where the streaming industry intersects with the business world. At Streaming Media, streaming professionals, technology experts, and business executives gather to learn how to use streaming and digital media for innovative business solutions. The Streaming Media West 2004 Conference is the premier learning, networking, and problem-solving event for anyone who is planning to integrate streaming and digital media into their enterprise, marketing, or broadcasting objectives and those within the industry looking to develop a sustainable ROI.

More information about Streaming Media West, October 26 through 28 can be found at: http://www.streamingmedia.com/west

About Keynote

Founded in 1995, Keynote Systems (Nasdaq “KEYN”), The Internet Performance Authority®, is the worldwide leader in e-business performance management services. Over 2,100 corporate IT departments and 19,000 individual subscribers rely on Keynote’s growing range of measurement and monitoring, service level and customer experience management services to improve e-business performance by reducing costs, improving customer satisfaction and increasing profitability.

Keynote is viewed as The Internet Performance Authority due to the company’s global infrastructure of over 1,600 measurement computers in more than 50 cities worldwide that capture and store on a daily basis over 40 million Internet performance measurements, frequent media citations quoting Keynote's Web performance data and analysis, the company’s market-leading Web performance indices for vertical markets and leading customer research that provides critical business insight into online customer experiences, industry trends, and competitive Web strategies.

Keynote Systems, Inc. is headquartered in San Mateo, California and can be reached at http://www.keynote.com/ or by phone in the U.S. at 650-403-2400.

Keynote, The Internet Performance Authority and Perspective are registered trademarks of Keynote Systems, Inc. Other trademarks are the property of their respective owners. © 2004 Keynote Systems, Inc.

Public Relations Contact:

Dan Berkowitz, Keynote Systems, Inc., (650) 403-3305, dberkowitz@keynote.com

Investor Relations Contact:

Erin Kasenchak, Keynote Systems, (650) 403-3314, erin.kasenchak@keynote.com