When it comes to measuring campaign performance, which Chrome and Android Privacy Sandbox API aims to do so without using third-party cookies?

The Attribution Reporting API is designed to measure conversions (like clicks or views leading to purchases) across sites and apps without relying on cross-site identifiers such as third-party cookies. It provides aggregated, privacy-preserving reports to help advertisers understand campaign performance while limiting individual user tracking. The Topics API focuses on interest-based advertising by categorizing user interests on-device, not attribution. The First-Party Set API allows related domains owned by the same entity to be treated as first-party, primarily for cookie access, not attribution. The Protected Audience API (formerly FLEDGE) enables on-device ad auctions for remarketing, which is distinct from campaign performance measurement.