ADT (ADT) SC 13G ADT / Google ownership change

Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing with each other on behalf of each of them of such a statement on Schedule 13G, and any amendments thereto, with respect to the common stock beneficially owned by each of them of ADT Inc. This Joint Filing Agreement shall be included as an Exhibit to such Schedule 13G.

Dated: September 18, 2020

GOOGLE LLC
By:	/s/ Kenneth H. Yi
Name:	Kenneth H. Yi
Title:	Assistant Secretary
XXVI HOLDINGS INC.
By:	/s/ Kathryn W. Hall
Name:	Kathryn W. Hall
Title:	Assistant Secretary
ALPHABET INC.
By:	/s/ Kathryn W. Hall
Name:	Kathryn W. Hall
Title:	Assistant Secretary