21Vianet Group, Inc. Filed Its Annual Report on Form 20-F

BEIJING, April 9, 2014 (GLOBE NEWSWIRE) -- 21Vianet Group, Inc. (Nasdaq:VNET) ("21Vianet" or the "Company"), the largest carrier-neutral Internet data center services provider in China, today announced that it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2013 with the Securities and Exchange Commission on April 9, 2014. The annual report can be accessed on 21Vianet's investor relations website at http://ir.21vianet.com/. The Company will provide hardcopies of the annual report containing its audited consolidated financial statements, free of charge, to its shareholders and ADS holders upon request.

About 21Vianet

21Vianet Group, Inc. is the largest carrier-neutral internet data center services provider in China. 21Vianet provides hosting and related services, managed network services, cloud infrastructure services, and content delivery network services, improving the reliability, security and speed of its customers' internet infrastructure. Customers may locate their servers and networking equipment in 21Vianet's data centers and connect to China's internet backbone through 21Vianet's extensive fiber optic network. In addition, 21Vianet's proprietary smart routing technology enables customers' data to be delivered across the internet in a faster and more reliable manner. 21Vianet operates in 44 cities throughout China, servicing a diversified and loyal base of more than 2,000 customers that span many industries ranging from internet companies to government entities and blue-chip enterprises to small- to mid-sized enterprises.

CONTACT: Investor Relations Contact:



         21Vianet Group, Inc.Eric Chu, CFA

         +1 (908) 707 2062

         IR@21Vianet.com



         Joseph Cheng

         +86 10 8456 2121

         IR@21Vianet.com



         ICR, Inc.Jeremy Peruski

         +1 (646) 405-4922

         IR@21Vianet.com
Source: 21Vianet Group, Inc.

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