Full Answer
GTM became synonymous with server-side tracking because Google's own server-side setup requires a GTM server container hosted on Google Cloud. But server-side tracking is simply any method that sends event data from a server, not a browser, to a destination API.
WordPress-native solutions use WooCommerce order hooks and plugin APIs to capture events server-side and route them directly via platform APIs (Facebook CAPI, GA4 Measurement Protocol, Google Ads Enhanced Conversions). No GTM container, no cloud hosting setup, no GTM expertise required. This independence is why setup time drops from 50-120 developer hours (for GTM server-side) to approximately 11 minutes for WordPress-native solutions.