CDK Global (CDK) 10-Q 2020 Q3 Quarterly report

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of CDK Global, Inc. (the "Company") on Form 10-Q for the fiscal quarter ended March 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Brian Krzanich, President, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	May 5, 2020	/s/ Brian Krzanich
		Brian Krzanich
		President, Chief Executive Officer (principal executive officer)