Monitor a Deno Deploy app with Timelines and built-in observability (logs, traces, metrics)

Documented steps

1. Auth: Sign in to console.deno.com with GitHub; all resources are organization-owned and membership is invite-based by GitHub username.
2. Create an organization at console.deno.com - its slug becomes the default domain (acme-inc.deno.net); apps get my-app.acme-inc.deno.net (production) and my-app--branch-name.acme-inc.deno.net (branch URLs).
3. Invite teammates from org settings (+ Invite User, GitHub username; they get an email link).
4. Use Timelines: Production serves the default git branch; each other branch gets a branch timeline; each revision also gets an individual preview URL.
5. Roll back or freeze production instantly by locking a specific revision as active on a timeline - no git push needed.
6. Logs tab: search/filter console-captured output by revision, context, or trace ID.
7. Traces tab: waterfall span view captured automatically for built-in HTTP/fetch and supported frameworks (Next.js, Fresh, Astro); add custom spans via the OpenTelemetry API; filter by method/path/status/trace ID.
8. Metrics tab: per-app time-series (incoming requests, outbound fetches); default window last hour, supports relative (now-1h, now/d) and absolute ranges.
9. Official docs: https://docs.deno.com/deploy/reference/organizations/ ; https://docs.deno.com/deploy/reference/observability/ ; https://docs.deno.com/deploy/reference/timelines/