HealthTrio, Microsoft and Unisys Announce Results of Health Plan System Scalability Study

NASHVILLE, Tenn., June 10, 2002 — HealthTrio, a leading provider of e-health applications and core business systems for the managed care industry, Microsoft (NASDAQ: MSFT) and Unisys (NYSE: UIS) today announced the results of a benchmark of HealthTrio xpress, HealthTrios core managed care administration system.

The system scalability was tested by real-time emulation of the transaction load of 8,000 simultaneous users working on a plan database of over 4,000,000 members. The benchmark team determined that HealthTrio xpress can easily handle this number of users and members while maintaining sub-second response times. The 8,000 concurrent users were performing transactions that included adding claims, adjudicating claims, performing customer service calls, adding members and modifying members. To further validate the systems scalability, during the same time period, multiple batch processes were performing an average of 360,000 capitation transactions and 197,200 claims adjudicated per hour.

“We are extremely pleased with the results of this study,”
said Ralph A. Korpman, M.D., CEO and co-founder of HealthTrio.
“The benchmarks captured to date exceed, in many cases dramatically, the known benchmarks and performance results for similar processes within our competitors products.”

For these scalability tests, the Microsoft® Windows® 2000 Datacenter Server operating system was run on a 32-way Unisys ES7000 enterprise server. Microsoft SQL Server™
2000 Enterprise Edition provided database functionality. Stress software included Benchmark Factory, a load testing solution that scales throughput to virtually unlimited users, helping to discover the limits of critical environments.

The ES7000 server is based on the Unisys Cellular MultiProcessing (CMP) server architecture, which provides an array of computing capabilities required for enterprise-class e-business computing — capabilities that are well-known to users of large-scale computers, but unprecedented in computing environments using Microsoft and Intel technology. The ES7000 was designed for the power of Intel 64-bit Itanium processors. Using CMP’s innovative partitioning capabilities, Itanium and Pentium III Xeon processors can run side-by-side within one server. These and other advantages enable CMP-based servers to match the performance of UNIX systems in enterprise-class e-business and other critical applications at a fraction of the price.

“This initiative with HealthTrio and Unisys clearly demonstrates that Windows 2000 Datacenter Server takes challenging transaction processing tasks in stride,”
said David Lubinski, general manager of Healthcare at Microsoft.
“We look forward to more opportunities to work together to bring technology solutions to the healthcare industry.”

“Our ES7000 enterprise class server hardware is ideally suited for the healthcare environment”
said Mike Thomas, Executive Vice President & General Manager, Unisys Global Solution Partners Program
“The transactions are complex and require very dependable, very fast hardware.”
He added,
“HealthTrios applications and Microsofts operating system are both tuned to deliver exactly the performance thats required.”

HealthTrio xpress is a fully-integrated, end-to-end client-server based core business administrative system that replaces outdated and often insufficient legacy systems. It provides the same comprehensive functionality of a large traditional system in a more user-friendly environment, with a lower investment and a shorter implementation period.

About HealthTrio

HealthTrio is a leading provider of e-health applications and core business systems for the managed care industry. HealthTrio connect provides health plans and their providers, members, brokers and employers with a quickly-installed Internet communications channel that reduces inefficiencies and administrative costs while
a health plans legacy systems in a HIPAA-ready environment. HealthTrio xpress is a core business system that replaces a health plans legacy systems with a fully integrated, end-to-end administrative infrastructure. Both products can often be implemented in 90 days or less, either as stand-alone applications or together as a complete solution. For more information on HealthTrio and its suite of products, please contact 1-877-571-1988 or visit .

About Microsoft

Founded in 1975, Microsoft (Nasdaq
) is the worldwide leader in software, services and Internet technologies for personal and business computing. The company offers a wide range of products and services designed to empower people through great software any time, any place and on any device.

About Unisys

Unisys is a worldwide information technology services and solutions company whose 37,000 people help clients in more than 100 countries utilize technology to seize opportunities, overcome challenges and succeed in the global economy. The company offers a rich portfolio of business solutions led by its expertise in consulting and systems integration, outsourcing, network services and security, coupled with leading enterprise-class server and related technologies. Primary vertical markets for Unisys worldwide are the financial services, transportation, communications, media, commercial and public sectors, including U.S. federal government customers. For more information on the company, access the Unisys home page on the World Wide Web at . Investor information can be found at .

Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corp. in the United States and/or other countries.

The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

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