[UA→GA4] Data collection and tagging[UA→GA4] Tips for implementing GA4 with Google Tag Manager[UA→GA4] How gtag.js for UA maps to GA4[UA→GA4] Tips for switching from analytics.js to gtag.js[UA→GA4] Migrate ecommerce data collection from UA to GA4[UA→GA4] Send analytics.js event, timing, and exception hits to Google Analytics 4