Perot Systems Acquires Tellurian Networks, Inc.

Acquisition Builds on Perot Systems Strength as The Leading Provider of Healthcare IT Solutions

PLANO, Texas, Nov. 14 — Perot Systems Corporation (NYSE: PER) (http://www.perotsystems.com/) today announced that it has acquired substantially all of the assets of Tellurian Networks, Inc., a leading managed services hosting provider of Electronic Medical Records (EMR) and Practice Management (PM) applications to physician groups. Tellurian is based in Newton, NJ and has operations in New Jersey and California. Financial terms were not disclosed.

Tellurian serves physician practice groups with an innovative managed services hosting model that provides physicians with world-class technology, such as EMR and PM applications on a per-doctor and per-user basis. This model enables physician groups to lower and control costs while improving patient care. Perot Systems, which provides comprehensive healthcare solutions to primarily large provider-owned practices and academic medical centers, acquired Tellurian to broaden its reach into a greater component of the physician practice group market.

"We are pleased to welcome Tellurian's associates to the Perot Systems global team," said Peter Altabef, president and CEO of Perot Systems Corporation. "With its demonstrated expertise and commitment to operational excellence, Tellurian will enhance our expanding worldwide healthcare IT services capabilities."

"We are excited to be joining Perot Systems," said Robert Boyle, CEO of Tellurian Networks Inc. "Perot Systems' global delivery model, its outstanding people, and healthcare experience will enable us to strengthen the already high level of service we provide for our existing clients. These same capabilities will also provide new opportunities to leverage the combined organizations' relationships and increase adoption of our hosting solutions for both the acute and ambulatory healthcare segments."

"The managed services hosting model for medical applications is an attractive fit to our existing healthcare IT implementation and consulting business. Our Physician Solutions and Revenue Cycles Solutions groups can now offer small physician practices lower cost alternatives to traditional integrated solutions," stated Chuck Lyles, President of the Perot Systems healthcare group.

Following the acquisition, all of the Tellurian associates, working from locations in Newton, N.J. and Los Angeles, CA. will join Perot Systems. Currently, Tellurian's hosting serves 94 physician clients, 565 practice locations, representing 13,000 physicians.

About Tellurian Networks

Tellurian Networks is a nationwide provider of electronic practice management and medical records hosting solutions. Tellurian was founded in 1995 and has over 94 physician clients at 565 practice locations, representing 13,000 physicians. With clients around the world, Tellurian provides managed hosting services along with Internet connectivity, email and web hosting, spam and anti-virus protection, and co-location services. For more information, visit http://www.tellurian.com/, or phone 1-888-TELLURIAN.

About Perot Systems

Perot Systems is a worldwide provider of information technology services and business solutions. Through its flexible and collaborative approach, Perot Systems integrates expertise from across the company to deliver custom solutions that enable clients to accelerate growth, streamline operations and create new levels of customer value. Headquartered in Plano, Texas, Perot Systems reported 2007 revenue of $2.6 billion. The company has more than 23,000 associates located in the Americas, Europe, Middle East and Asia Pacific. Additional information on Perot Systems is available at http://www.perotsystems.com/.

This press release contains forward-looking statements that are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. For factors that could affect our business and cause actual results to differ materially, please refer to our Annual Report on Form 10-K for the fiscal year ended December 31, 2007, as filed with the U.S. Securities and Exchange Commission and available at http://www.sec.gov/, as updated in our Quarterly Reports on Form 10-Q filed after such Form 10-K, for additional information regarding risk factors. We disclaim any intention or obligation to revise any forward-looking statements whether as a result of new information, future developments, or otherwise.

Jonathan Moss
+1 972 577 6395
jonathan.moss@ps.net

Joe McNamara
+1 972 577 6165
joe.mcnamara@ps.net

SOURCE: Perot Systems Corporation

CONTACT: Joe McNamara, +1-972-577-6165, joe.mcnamara@ps.net, or Jonathan Moss, +1-972-577-6395, jonathan.moss@ps.net, both of Perot Systems Corporation

Web site: http://www.perotsystems.com/
http://www.tellurian.com/