AvantGo Teams with Yahoo! to Deliver Content and Services to Mobile Devices.

Business Editors, High-Tech Writers

SAN MATEO and SANTA CLARA, Calif.--(BUSINESS WIRE)--June 1, 2000

AvantGo Inc., a mobile Internet company, and Yahoo, Inc (Nasdaq:YHOO), a leading global Internet communications, commerce and media company, today announced an agreement to enable AvantGo to deliver personalized Yahoo!(R) content and services to mobile devices. Using a wireless, real-time connection or via desktop synchronization, AvantGo users can access Yahoo! news information, stock quotes, weather reports, sports scores, and movie listings on their mobile devices--in color on certain devices. Additionally, users also have access to the more than 350 optimized channels and hundreds of user-submitted sites already available on the free AvantGo mobile Internet service.

"We are pleased to be teaming with AvantGo to enable consumers around the globe to access Yahoo! content and services through data phones, personal digital assistants, pagers and an array of other alternative and wireless devices," said Mohan Vishwanath, vice president of Yahoo! Everywhere, Yahoo! Inc. "Through Yahoo! Mobile and AvantGo, our users will be able to access their personalized Yahoo! content and services when and where they need it most."

"With 145 million unique users worldwide every month, Yahoo!'s vast audience includes a significant number of users of handheld devices and Internet-connected phones," said Mike Aufricht, general manager of AvantGo Mobile Internet. "Now these individuals can access Yahoo! through AvantGo."

Yahoo! is the latest addition to AvantGo's list of companies now offering content and applications on the AvantGo mobile Internet service. Individuals with mobile devices can sign up for the free service by visiting AvantGo (www.avantgo.com) or Yahoo! Mobile (www.mobile.yahoo.com).

About AvantGo

AvantGo provides infrastructure software and services that enable businesses to create tighter relationships with their employees and customers through mobile devices. AvantGo Enterprise(TM) solutions enable organizations to wirelessly extend knowledge management, field force automation, inventory management and other business applications to their employees using mobile devices and Internet-enabled phones. The AvantGo Mobile Internet service allows companies to extend content and e-commerce beyond desktop computers to individuals on the go. Using AvantGo, individuals gain free access to interactive services and personalized content from brand-name publishers and e-commerce web sites. For more information, please visit the company's web site at www.avantgo.com or call 650-638-3399.

About Yahoo!

Yahoo! Inc. is a global Internet communications, commerce and media company that offers a comprehensive branded network of services to more than 145 million individuals each month worldwide. As the first online navigational guide to the Web, www.yahoo.com is the leading guide in terms of traffic, advertising, household and business user reach, and is one of the most recognized brands associated with the Internet. The company also provides online business services designed to enhance the Web presence of Yahoo!'s clients, including audio and video streaming, store hosting and management, and Web site tools and services. The company's global Web network includes 22 local World properties outside the United States. Yahoo! has offices in Europe, the Asia Pacific, Latin America, Canada and the United States, and is headquartered in Santa Clara, Calif.

AvantGo, AvantGo Enterprise and the AvantGo logo are trademarks of AvantGo, Inc. Yahoo! and the Yahoo! logo are registered trademarks of Yahoo! Inc. All other trademarks are the property of their respective owners.