USi Releases Client Service Metrics; Company Meets Or Exceeds All Service Level Agreements for the Months of September and October

Business Wire, Nov 14, 2001

Business/Technology Editors

ANNAPOLIS, Md.--(BUSINESS WIRE)--Nov. 14, 2001

USinternetworking, Inc. (USi, Nasdaq: USIX), the leading Application Service Provider (ASP), today released application availability and service level agreement client service metrics. Made possible through refinements to USi's proprietary service delivery platform and process, the Company is currently delivering a 99.95% availability across all mission-critical application services for its many enterprise clients, including leaders like VISA USA, Hershey Foods, and SchlumbergerSema Telecoms.(1) Additionally, USi met or exceeded all service level agreements across its entire client base for its iMAP (Internet Managed Application Provider) portfolio service offerings during the months of September and October.

USi delivers against the industry's most comprehensive service level agreements, significantly exceeding an average uptime requirement of 99.5%, while covering all layers of the service delivery stack including the data center, servers, networking, and application software. While USi is maintaining a 99.95% availability, Gartner Inc. estimates that most enterprises achieve 99% end-to-end availability for their mission critical application services.(2) A 99.95% availability equates to approximately 22 minutes of unscheduled downtime a month, whereas a 99% availability translates to approximately 432 minutes of unscheduled downtime a month.(3)

Market research firm IDC acknowledges USi's attention to quality of service. "IDC is seeing ASPs strive to develop more mature services delivery models. USi's continuous improvement in service levels is reflective of not only the focus the company has put on quality of service, but also the processes and systems it has developed to ensure customer satisfaction," said Meredith Whalen, Vice President, ASP, eCommerce and Consulting Services Research, IDC.

USi's delivery platform and process are central to this client service success. The USi Global Services Platform (USiGSP) is engineered and proven for ASP services and has grown to include over 4000 communications and computing infrastructure elements in production, over which two million production hours have accumulated. USi's specialized processes ensure quality throughout the application service delivery lifecycle. USi has achieved several third party certifications, including ISO 9001, SysTrust Cyber Process, SAS70 - Levels 1 and 2, and Microsoft Gold Certification.

"USi is not only the enterprise ASP market leader, but also the service quality leader," said Nick Magliato, Senior Vice President, Global Services Platform Technology. "These results show that large enterprises can trust USi to deliver and manage their mission critical applications."

Earlier this year, USi was named the ASP global market leader by market research firm IDC, and is the world's first ASP to have received multiple Microsoft ASP certifications for quality services.

About USinternetworking, Inc.

USinternetworking Inc. (Nasdaq: USIX), the leading Application Service Provider, delivers enterprise and e-commerce software as a service. The company's iMAP portfolio of service offerings delivers the 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. Additionally, USi's AppHost managed application hosting services provide the most advanced solutions for enterprises, software companies, marketplaces, public sector clients, and system integrators that are seeking a better way to deliver solutions over the Internet to their customers and end users. For more information, visit www.usi.com.

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 on the Company's Form 10-K filed with the SEC on April 2, 2001, the Company's Form 10-Q filed with the SEC on August 15, 2001, and in our other reports filed from time to time with the SEC.

(1) Covers a six month period from May 1 - October 31; availability calculation = 1 - (Downtime minutes / Minutes available); Minutes Available = # of clients X Days in Month X 24 X 60