C Go Live

This phase guide is being expanded including detailed walkthroughs. The structure and steps below are accurate.

Switch production traffic to the server-side path, verify everything is healthy, and retire the temporary validation setup.

What this phase does

Phase C is the production cutover. You update your production Google tag to route through the server container, the assistant verifies the change took effect, then cleans up the temporary forwarding route. Strict sequencing prevents version drift: you publish first, the assistant verifies, then the assistant publishes cleanup from your new baseline.

After verification, the assistant captures an immutable baseline of the healthy production state. This baseline is what health checks compare against going forward.

Before you start

Phase B complete: validation passing, readiness decision is "ready" or "ready with known differences."

What you'll do

Update the production Google tag. You update the Google tag in your web GTM container to use the server container URL and publish. This is the highest-impact change and stays manual — the assistant provides exact instructions but you make the change.
Verify the change. The assistant confirms the live container version changed and production routing points to the server container.
Clean up the forwarding route. The assistant creates a fresh workspace from the new live container version, removes the temporary forwarding tag, and you review and confirm before publishing.
Verify production routing. Automated checks confirm the server endpoint is reachable, sGTM is responding, and the forwarding route is no longer present.
Verify critical events. You confirm that critical events still appear in GA4 realtime for the production property. All critical events must be confirmed before cutover completes.
Capture baseline. The assistant captures the post-cutover state as an immutable baseline: which events are present, which parameters they carry, routing health, container fingerprints.

What you'll have when done

Production traffic routed through your server container. The temporary validation setup retired. An immutable baseline of the healthy post-cutover state for health checks to compare against.