Revenue

12 Months Ended

Dec. 31, 2021

Revenue From Contract With Customer [Abstract]

Revenue

3. Revenue

The Company recognizes revenue in accordance with ASC 606. Refer to Note 2 of these notes to our consolidated financial statements for a description of our ASC 606 revenue recognition accounting policies. Although the Company maintains agreements with its customers in multiple contractual forms, the overall promise within each of the contract types is to provide customers the ability to plan, buy and measure their digital advertising campaigns using our platform.

The disaggregation of revenue was as follows:

	Year Ended December 31,
	2021		2020		2019
Revenue	(in thousands)
Over time	$	3,880	$	4,612	$	6,237
Point in time		220,247		160,639		158,655
Total revenue	$	224,127	$	165,251	$	164,892

  Remaining performance obligations for contracts with an original expected duration of greater than one year amounted to $6.6 million and $9.2 million as of December 31, 2021 and 2020, respectively, which primarily relate to deferred revenue and data management and advanced reporting services. As of December 31, 2021 and 2020, $1.3 million and $3.6 million, respectively, is expected to be recognized within one year, with the remaining amounts expected to be recognized thereafter.

Contract Liabilities

The follow table summarizes the changes in deferred revenue balances:

	Year Ended December 31,
	2021			2020
	(in thousands)
Beginning balance	$	8,337		$	10,030
Recognition of deferred revenue		(1,786	)		(1,693	)
Deferral of revenue		—			—
Ending balance	$	6,551		$	8,337

The revenue recognized from the contract liabilities consisted of the Company satisfying performance obligations during the normal course of business. Deferred revenue that is anticipated to be recognized during the succeeding 12-month period is recorded in current portion of deferred revenue and the remaining amount is recorded as non-current portion of deferred revenue within the consolidated balance sheets.