Last updated: January 28, 2026 (Fixed links in PDF)
The Event & Conversion API (commonly known as CAPI) is designed to standardize communication of marketing-related events from advertisers’ systems to advertising platforms and partners. The recipients are able to leverage this information to optimize marketing campaigns toward desired outcomes and to better measure and report on marketing campaign performance across complete marketing funnels.
You can view the document or download it below. Open for Public Comment until February 20, 2026