Event contracts are modeled with required fields, optional fields, route context, and downstream system dependencies in one surface.
Verification
Collection governance should be provable, not just assumed because tags happen to fire.
This route captures the product’s verification claims and the public API surfaces that back the control plane.
Payload scenarios connect session and campaign context to actual analytics integrity instead of treating GTM as a pure implementation detail.
Failure modes make broken tracking legible in revenue terms so fixes can be prioritized by business impact, not just tag completeness.