Full Answer
GA4 vs Universal Analytics Measurement Protocol: Endpoint: Authentication:
- UA: None (public endpoint, tracking ID in payload)
- GA4: API Secret required (adds security) Payload format: Key differences: | Feature | UA | GA4 | |---------|-----|-----| | Format | Query string | JSON | | Auth | None | API Secret | | Event model | Category/Action/Label | Event/Parameters | | User ID | cid | client_id | | Validation | None | Debug endpoint | Migration: Current status:
- UA: Sunset July 2024, no longer processing
- GA4: Current,...