Sample live traffic traces without reproducing requests; configure sampling rules per environment and pay $0.50 per 1M span units.
Summary
Eliminates manual reproduction for production debugging—you observe real user requests directly. Custom instrumentation via @vercel/otel lets you add framework and application spans beyond automatic infrastructure capture.
Why it matters
Eliminates manual reproduction for production debugging—you observe real user requests directly. Custom instrumentation via @vercel/otel lets you add framework and application spans beyond automatic infrastructure capture.
Implementation verdict
Replaces session tracing for production observability. Requires instrumenting code with @vercel/otel for custom spans; automatic infrastructure/fetch spans require no changes. Beta status means API may shift; worth configuring now if you're on Vercel—zero cost until you add a sampling rule.
Sources
Dev Signal
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