[21Vianet Announces US$296 Million Investment From Kingsoft, Xiaomi and Temasek Business Cooperation Memorandum Calls for 5,000 Cabinets to be Leased Over Three Years Upon Completion of the Transaction BEIJING, Dec. 1, 2014 (GLOBE NEWSWIRE) – 21Vianet Group, Inc. (Nasdaq: VNET) (“21Vianet” or the “Company”), a leading carrier-neutral internet data center services provider in China, announced today that affiliates of Kingsoft] [21Vianet Group, Inc. By : Name : Shang-Wen Hsiao Title : Chief Financial Officer 6-K 1 d829511d6k.htm FORM 6-K]

[21Vianet Group, Inc. Reports Unaudited Third Quarter 2014 Financial Results 3Q14 Net Revenues Up 51.5% YOY to RMB778.5 Million 3Q14 Adjusted EBITDA Up 61.3% YOY to RMB153.9 Million Live Conference Call to be Held at 8:00 PM U.S. Eastern Time, November 25, 2014 BEIJING, Nov. 25, 2014 (GLOBE NEWSWIRE) — 21Vianet Group, Inc. (Nasdaq: VNET) (“21Vianet” or the “Company”), a] [21Vianet Group, Inc. By : Name : Shang-Wen Hsiao Title : Chief Financial Officer 6-K 1 d828297d6k.htm FORM 6-K]

[21Vianet Announces Cloud Storage Solutions by StorSimple BEIJING, October 30, 2014 - 21Vianet Group, Inc. (Nasdaq:VNET) (“21Vianet” or the “Company”), the largest carrier-neutral Internet data center services provider in China, today announced that hybrid cloud storage solutions offered by StorSimple, a data storage optimization solution, are now available to all Windows Azure customers in China. StorSimple offers advanced, automatic storage] [FORM 6-K 21Vianet Group, Inc. M5, 1 Jiuxianqiao East Road, Chaoyang District Beijing 100016 The People’s Republic of China (86 10) 8456 2121 x ¨ Form 20-F ¨ ¨ 21Vianet Group, Inc. Shang-Wen Hsiao Chief Financial Officer 6-K 1 d813949d6k.htm FORM 6-K]