Summary
On August 20, 2026, Vercel added support for custom metrics, letting developers emit their own metrics from Vercel Functions and analyze them alongside Vercel's built-in observability data.
What changed
Vercel Observability now accepts custom metrics emitted directly from Vercel Functions.
Why it matters
Teams can track application-specific signals next to platform metrics without wiring up a separate metrics backend, reducing observability tooling sprawl.
Evidence excerpt
Emit your own metrics from Vercel Functions and analyze them alongside Vercel's built-in observability data.