Attached files

file filename
EX-32.1 - CERTIFICATION OF CEO PURSUANT TO RULE 13A-14(B) OR 15D-14(B) - Medidata Solutions, Inc.mdso-12312017xex321.htm
EX-32.2 - CERTIFICATION OF CFO PURSUANT TO RULE 13A-14(B) OR 15D-14(B) - Medidata Solutions, Inc.mdso-12312017xex322.htm
EX-31.2 - CERTIFICATION OF CFO PURSUANT TO RULE 13A-14(A) OR 15D-14(A) - Medidata Solutions, Inc.mdso-12312017xex312.htm
EX-31.1 - CERTIFICATION OF CEO PURSUANT TO RULE 13A-14(A) OR 15D-14(A) - Medidata Solutions, Inc.mdso-12312017xex311.htm
EX-21.1 - SUBSIDIARIES OF MEDIDATA SOLUTIONS, INC. - Medidata Solutions, Inc.subsidiariesoftheregistran.htm
EX-10.16 - EXHIBIT 10.16 - Medidata Solutions, Inc.mcaponeseparationagreement.htm
10-K - FORM 10-K - Medidata Solutions, Inc.a10-k2017.htm


Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-218349, 333-211946, 333-198262, 333-192861, 333-188349, 333-181818, and 333-160461 on Form S-8 of our reports dated February 28, 2018, relating to the consolidated financial statements and financial statement schedule of Medidata Solutions, Inc. and subsidiaries (the "Company"), and the effectiveness of the Company's internal control over financial reporting, appearing in this Annual Report on Form 10-K of Medidata Solutions, Inc. for the year ended December 31, 2017.

Deloitte & Touche LLP
New York, New York
February 28, 2018