[EXECUTION VERSION PURCHASE AGREEMENT dated as of September 30, 2013 among 21VIANET GROUP, INC., THE SELLERS NAMED HEREIN and ESTA INVESTMENTS PTE LTD TABLE OF CONTENTS ARTICLE 1 Definitions . Definitions Section 1.01 1 . Other Definitional And Interpretive Provisions Section 1.02 5 ARTICLE 2 Sale And Purchase Of The Sale Shares . Agreement to Sell and Purchase Section 2.01] [EXECUTION VERSION INVESTOR RIGHTS AGREEMENT dated as of October 11, 2013 among 21VIANET GROUP, INC., ESTA INVESTMENTS PTE LTD and CERTAIN OTHER PARTIES NAMED HEREIN TABLE OF CONTENTS ARTICLE 1 Definitions . Definitions Section 1.01 1 . Other Definitional and Interpretative Provisions Section 1.02 3 ARTICLE 2 Corporate Governance . Investor Nominee Director Section 2.01 4 . Board and Committee] [EXECUTION VERSION th Dated this 11 21VIANET GROUP, INC. REGISTRATION RIGHTS AGREEMENT TABLE OF CONTENTS Page ARTICLE 1 Definitions ARTICLE 2 Registration Rights Section 2.01. Demand Registration Rights 3 Section 2.02. Piggyback Registration Rights 5 Section 2.03. Form F-3 Registration 7 Section 2.04. 8 Section 2.05. Information From Investor 10] [JOINT FILING AGREEMENT provided This Joint Filing Agreement may be executed in any number of counterparts all of which together shall constitute one and the same instrument. th ESTA INVESTMENTS PTE. LTD. Rohit Sipahimalani Authorised Signatory TEMBUSU CAPITAL PTE. LTD. Chia Yue Joo Director TEMASEK HOLDINGS (PRIVATE) LIMITED Rohit Sipahimalani Authorised Signatory] [CUSIP No. 90138A996 1.]