24k Gold Points Selects USinternetworking To Manage Innovative E-Commerce Platform.

Business/Technology Editors

ANNAPOLIS, Md.--(BUSINESS WIRE)--Sept. 25, 2000

Leading ASP Delivers Mission-Critical E-Commerce Solution to

24k.com In Less Than Two Months

24k Gold Points, the leading "clicks and mortar" loyalty company backed by global travel, hospitality and loyalty marketing giant, Carlson Companies, Inc., has selected USinternetworking, Inc. (Nasdaq: USIX), the leading Application Service Provider (ASP), to manage its new site powered by BroadVision. The comprehensive e-commerce site, 24k.com, enables consumers to plan and book travel, shop at more than 100 online retailers and find entertainment while earning the rewards currency Gold Points for each transaction.

"We selected USinternetworking for its strong client service reputation and proven track record with managing BroadVision software and highly complex applications," said Walt Braeger, 24k Gold Points vice president and chief technology officer. "USi has been a phenomenal partner in preparing our site for the market. We actually went to USi midstream in site development with a complex architecture and pressing deadlines. In just eight weeks, USi helped get our site up and running for phase one."

As the leader in the delivery of ASP solutions to the enterprise market, USi's total responsibility model will enable 24k Gold Points to offer a highly reliable site with broad functionality, backed by USi's industry-leading service level agreements. In addition, 24k Gold Points will benefit from USi's monthly fee-based model that helps manage incremental technologic advancement without high upfront costs.

"24k.com is on its way to becoming a major player in the online travel, entertainment and shopping market by leveraging the vast functionality and speed to market made possible by the USi solution," said Stephen E. McManus, president and general manager of USi's e-commerce business unit. "The reliability and scalability of the USi solution will ensure that members continue to receive exceptional service as 24k.com adds features and increases its traffic levels."

ABOUT 24K GOLD POINTS:

24k Gold Points was formed in February 2000 when Carlson Companies, Inc. merged its Gold Points Rewardssm and 24k.com business units. The emerging leader among "clicks and mortar" loyalty programs is backed by a network of premium consumer brands and partners, including more than 1,500 bricks and mortar locations. 24k.com is the new online dimension that launched May 31st and enables consumers to plan and book travel, shop at more than 100 online retailers, and find entertainment options -- while earning Gold Points for every transaction. 24k Gold Points is headquartered at Carlson Center in Minneapolis, Minnesota.

ABOUT USINTERNETWORKING, INC.:

USinternetworking Inc. (Nasdaq: USIX) is the leading Application Service Provider delivering e-commerce and enterprise software as a service. The Company's iMAP portfolio of service offerings delivers the rich functionality of leading software from Ariba, BroadVision, Lawson, Microsoft, Oracle, PeopleSoft and Siebel as a continuously supported, flat-rate monthly service via an advanced, secure global data center network.

Internet Managed Application Provider, iMAP, AppHost, PriorityPeering, USiGSP, USiSAN USiAccelerate, and Making Software Simple are service marks of USinternetworking, Inc. All other trademarks are the property of their respective owners. USi strategic partners and providers are publicly traded on Nasdaq under the symbols: ARBA, BVSN, CSCO, MSFT,ORCL, PSFT and SEBL.

Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to USinternetworking Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in the Company's registration statement on Form S-3 declared effective by the Securities and Exchange Commission ("SEC") on June 23, 2000, the Company's Form 10-Q filed with the SEC on August 15, 2000, and in our other reports filed from time to time with the SEC.