Exhibit 99.1

Joint Filing Agreement

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 (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the common stock, par value of $0.0001 per share, of Ouster, 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.

	Baidu, Inc.
By:	/s/ Robin Yanhong Li
Name:	Robin Yanhong Li
Title:	Chief Executive Officer
	Baidu Holdings Limited
By:	/s/ Robin Yanhong Li
Name:	Robin Yanhong Li
Title:	Director
	Baidu (Hong Kong) Limited
By:	/s/ Li Liu
Name:	Li Liu
Title:	Director