ChinaCache and Microsoft Establish Strategic Partnership

ChinaCache International Holdings Ltd. ("ChinaCache" or the "Company")

, the leading total solutions provider of Internet content and application delivery services in China, announced today that it has established a strategic partnership with Microsoft Corporation ("Microsoft")

. The Company's self-service CDN platform, Webluker, will integrate its CDN and other services with Windows Azure China and provide these services to customers in China, and will migrate its hosting to Windows Azure in China in the meantime. By building on the Windows Azure technology, ChinaCache will be able to scale Webluker as its user base grows. Webluker is sold under a "pay-as-you-go" model, enabling businesses to match the services to their needs and reduce IT investment. "We are pleased to have ChinaCache as our strategic partner for Windows Azure China. The Company has provided Microsoft with valuable services for more than six years, and we are delighted to take our partnership to the next level with this agreement. The high-quality cloud services made possible by Windows Azure, coupled with ChinaCache's expertise in content and application delivery, will provide clients with unparalleled ability to drive user satisfaction and operational efficiency," said Dr. Ya-Qin Zhang, Corporate Vice President of Microsoft Corporation and Chairman of Microsoft Asia-Pacific R&D Group. "There is a strong and growing demand for secure, reliable and speedy cloud services in China, and we look forward to working more closely with ChinaCache to build Windows Azure into one of the biggest, best cloud computing platforms in the Chinese market." "We are thrilled to partner with Microsoft as it brings Windows Azure into China. This is the first global company whose cloud technology is being offered to Chinese users, and we believe Windows Azure will be an ideal choice for enterprises in China through its combination of flexible access to data, speed and security," added Mr. Song Wang, Founder, Chairman and CEO of ChinaCache. "Cloud computing is meaningful only when it provides a quality end-user experience, which is guaranteed by best-in-class CDN and a comprehensive suite of value-added services. The partnership is in line with our goal of becoming an indispensable part of the cloud computing ecosystem, and we believe that the fast-growing cloud economy presents a number of exciting expansion opportunities for ChinaCache." Windows Azure is available for purchase in 89 countries and 40 local currencies. Windows Azure offers customers a range of services including disaster recovery, data sovereignty and improved local performance through three major regions and eight sub-regions that are located around the globe. About ChinaCache International Holdings Ltd. ChinaCache International Holdings Ltd.

is the leading total solutions provider of Internet content and application delivery services in China. As a carrier-neutral service provider, ChinaCache's network in China is interconnected with networks operated by all telecom carriers, major non-carriers and local Internet service providers. With more than a decade of experience in developing solutions tailored to China's complex Internet infrastructure, ChinaCache is a partner of choice for businesses, government agencies and other enterprises to enhance the reliability and scalability of online services and applications and improve end-user experience. For more information on ChinaCache, please visit en.chinacache.com. Safe Harbor Statement This announcement contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates" and similar statements. ChinaCache may also make written or oral forward-looking statements in its reports filed or furnished to the U.S. Securities and Exchange Commission, in its annual reports to shareholders, in press releases and other written materials and in oral statements made by its officers, directors or employees to third parties. Statements that are not historical facts, including statements about ChinaCache's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of factors could cause actual results to differ materially from those contained in any forward-looking statements, including but not limited to the following: the Company's goals and strategies, expansion plans, the expected growth of the content and application delivery services market, the Company's expectations regarding keeping and strengthening our relationships with its customers, and the general economic and business conditions in the regions where the Company provides its solutions and services. Further information regarding these and other risks is included in the Company's filings with the U.S. Securities and Exchange Commission. All information provided in this press release is as of the date of this press release, and ChinaCache undertakes no duty to update such information, except as required under applicable law.