Meta Pixel and Google Ads - conversion tags
GA4 measures traffic and on-site funnels, but campaign optimisation in Google Ads and Meta
needs separate conversion signals. Without consistent purchase / lead in the dataLayer
and marketing consent you lose data for Smart Bidding and remarketing.
- Google Ads → link account to GA4, import key events or use a GTM conversion tag; same
transaction_idas GA4 ecommerce. - Meta Pixel → browser tag via GTM; if reach drops, consider Meta CAPI via server-side.
- Consent →
ad_storageandad_user_datain the consent hub before pixels fire. - Testing → Meta Pixel vs Google Ads guide, GTM checklist and ad tags FAQ.