We had the following transactions with Alphabet Inc. and its affiliates during the three and six months ended June 29, 2019 and June 30, 2018 (in thousands):



	Three Months Ended				Six Months Ended
	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Revenue	$	876	$	705	$	1,822	$	1,342
Selling and marketing expense	$	3,243	$	2,617	$	6,464	$	5,653

We had the following transactions with Alphabet Inc. and its affiliates as of June 29, 2019 and December 29, 2018 (in thousands):



	Period Ended
	June 29, 2019		December 29, 2018
Accounts receivable	$	325	$	421
Unbilled accounts receivable	$	474	$	680
Accounts payable	$	—	$	530
Accrued expense	$	967	$	403
Deferred revenue	$	115	$	1