Tenable Holdings Inc

2. Revenue

Disaggregation of Revenue

The following table presents a summary of revenue:

Concentrations

We sell and market our products and services through our field sales force that works closely with our channel partners, which includes a network of distributors and resellers, in developing sales opportunities. We use a two-tiered channel model whereby we sell our products and services to our distributors, which in turn sell to resellers, which then sell to end-users. Revenue derived through our channel network comprised 94% and 92% of revenue in the three and six months ended June 30, 2024, respectively, and 93% in the three and six months ended June 30, 2023. One of our distributors accounted for 34% of revenue in the three and six months ended June 30, 2024 and 36% of revenue in the three and six months ended June 30, 2023. That same distributor accounted for 31% and 32% of accounts receivable at June 30, 2024 and December 31, 2023, respectively.

Contract Balances

We generally bill our customers in advance and accounts receivable are recorded when we have the right to invoice the customer. Contract liabilities consist of deferred revenue and include customer billings and payments received in advance of performance under the contract. In the three months ended June 30, 2024 and 2023 and the six months ended June 30, 2024 and 2023, we recognized revenue of $205.1 million, $179.0 million, $368.7 million, and $319.2 million, respectively, that was included in the deferred revenue balance at the beginning of the respective periods.

Remaining Performance Obligations

At June 30, 2024, the future estimated revenue related to unsatisfied performance obligations was $747.5 million, of which $572.0 million is expected to be recognized as revenue over the next twelve months, and the remainder is expected to be recognized over thefour years thereafter.

Deferred Commissions

The following summarizes the activity of deferred incremental costs of obtaining a contract: