EXHIBIT A Agreement of Joint Filing

CUSIP No. 03213A 10 4 SCHEDULE 13G Page 9 of 9

EXHIBIT A

Agreement of Joint Filing

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other reporting persons on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the shares of Class A common stock, $0.00001 par value per share, of Amplitude, Inc., a Delaware corporation, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of February 11, 2022.

GIC PRIVATE LIMITED
By:		/s/ Xxxxxx Xxx Xxx Xxxx
Name: Xxxxxx Xxx Xxx Xxxx
Title: Senior Vice President
By:		/s/ Xxxxx Xxxxx Xxxxxxx
Name: Xxxxx Xxxxx Xxxxxxx
Title: Senior Vice President
GIC SPECIAL INVESTMENTS PTE. LTD.
By:		/s/ Xxxx Xxx Xxx
Name: Xxxx Xxx Xxx
Title: Director
JASMINE VENTURES PTE. LTD.
By:		/s/ Xxxxx Xxxxxxx
Name: Xxxxx Xxxxxxx
Title: Director