Full Answer
The question isn't whether you can skip GTM — it's which server-side route fits your store. A GTM server-side container is Google's general-purpose answer: flexible, but heavy. It needs its own cloud hosting (typically Cloud Run or App Engine), a custom tagging subdomain, and someone comfortable maintaining both. For an enterprise with a developer team, that works. For a WooCommerce store owner, it's usually the reason server-side tracking never happens at all.
Plugin-based server-side tracking takes the other route. Because WordPress already runs on a server, a plugin can fire events from that server straight to GA4's Measurement Protocol, Meta's Conversions API, and TikTok's Events API — the same endpoints a GTM container would call. Events leave from your own domain as first-party data, which is exactly what lets server-side tracking recover conversions lost to ad blockers and browser privacy controls (Usercentrics, 2026). Deduplication between browser and server events is handled by matched event IDs, so each platform counts a conversion once.
Tools taking this plugin route include Transmute Engine, which sends WooCommerce events server-side to GA4, Google Ads, Meta CAPI, TikTok, and BigQuery with no GTM infrastructure, alongside other plugins in the WordPress.org directory. Whichever you pick, clean event data comes first — it feeds everything downstream, including newer ad-platform metrics like Google's Qualified Future Conversions.