Satyam Helps Customers Prepare for Windows Vista

• Satyam one of the six organizations selected worldwide to implement new operating system for global customers

Hyderabad, India, December 11, 2006: Satyam Computer Services, (NYSE: SAY), the leading global consulting and IT services company, announced that Microsoft has selected Satyam to participate in the Windows Vista Application Compatibility Factory (ACF), a program designed to help organizations around the world implement Windows Vista, the latest operating system from Microsoft. Recognizing applications compatibility as a challenge for most enterprises, Microsoft created ACF to help Windows Vista customers assess and remediate their existing applications, mitigate the risks inherent in migration, and accelerate rollout.

“Satyam’s robust infrastructure coupled with its technical expertise and valuable customer experience provides the scale and depth on ACF. As a leading global Microsoft partner, we believe Satyam has the right capabilities to provide well-tested Windows Vista-compliant applications and help customers realize their potential on our platform.” said Brad Brooks, general manager, Windows Client Group at Microsoft.

Satyam, a key Microsoft industry partner with significant expertise on its products and technologies, is amongst the first and one of just six global organizations (of Microsoft’s 660,000 partners and 15 globally managed partners) participating in the ACF. Several Satyam experts have undergone in-depth training on Windows Vista, and are now qualified to oversee and facilitate deployment of the operating system, which will become available later this month.

“As an ACF partner, Satyam has a significant ‘early-bird’ advantage,” said Nick Sharma, senior vice president, Infrastructure Management Services, Satyam . “We already know how to mitigate risk and manage remediation associated with Windows Vista—well before it has been released. These capabilities, coupled with our strong infrastructure skills and global packaging lab, enable us to optimize the benefits Windows Vista customers receive as quickly as possible—a real source of confidence and peace of mind for customers.”

In addition, Hari Natarajan, senior vice president in-charge of Satyam’s strategic relationship with Microsoft noted, “As a key partner for a major Microsoft global launch, Satyam benefits by gaining access to a strong opportunity pipeline driven by Microsoft, apart from helping us to build a Windows Vista Center of Excellence, which will further facilitate its optimal adoption across our shared enterprise customers.”

Specifically, an ACF partner will help customers determine how to make their existing applications work with Windows Vista. Satyam will help customers identify application compatibility blockers, assess their application inventories, and determine the best ways to proceed with implementation.

Moreover, as an ACF partner, Satyam will pass on exclusive technical training and application compatibility remediation materials it receives from Microsoft to organizations that engage the ACF.

Satyam Contacts

For further information, contact: MediaRelations@satyam.com

Safe Harbor:
This press release contains forward-looking statements within the meaning of section 27A of Securities Act of 1933, as amended, and section 21E of the Securities Exchange Act of 1934, as amended. The forward-looking statements contained herein are subject to certain risks and uncertainties that could cause actual results to differ materially from those reflected in the forward-looking statements. Satyam undertakes no duty to update any forward-looking statements. For a discussion of the risks associated with our business, please see the discussions under the heading “Risk Factors” in our report on Form 20 F concerning the fiscal year ended March 31, 2006, furnished to the United States Securities Exchange Commission on April 28, 2006 and the other reports filed with the Securities Exchange Commission from time to time. These filings are available at www.sec.gov

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