Full Answer

For years, feeding Google your first-party data meant stitching together separate pipes — one integration for Customer Match audiences, another for offline conversions, a third for GA4 events — each with its own authentication, quirks, and failure modes. Data Manager collapses all of that into a single ingestion layer, and it keeps expanding: as of May 7, 2026 it also accepts GA4 event ingestion for custom and recommended events. You send hashed first-party customer data once, and the API routes it to the correct conversion action automatically.

For WooCommerce stores, the workflow hit hardest is Enhanced Conversions for Leads — the same first-party signal that broke for many stores in April when Google tightened its requirements. Any store still uploading CRM data or offline conversions through the legacy Ads API path is on borrowed time: our Data Manager migration guide for WooCommerce walks through exactly what stops working and when.

The practical move is an audit. List every upload that still rides the old Ads API route, migrate each to the Data Manager endpoint, and verify the hashing and consent fields survive the switch. Some server-side tools, such as Transmute Engine, route WooCommerce conversion data to the Data Manager endpoint automatically — one way to make the migration a configuration change rather than a rebuild.