# View advanced function metrics with Observability

**Published:** October 30, 2024 | **Authors:** Tobias Lins, Timo Lins, Ethan Shea

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Users in the [limited beta of Observability](https://vercel.com/changelog/application-aware-observability-in-limited-beta-5POkb52n4XdTZvwbMCqljG) can now view advanced insights for serverless Vercel Functions. Explore low level metrics about function execution, including:

- **CPU throttle and memory usage**: Understand CPU usage and memory consumption and see if you could benefit from upgrading the function to more resources
- **Time to First Byte (TTFB)**: See how quickly your function responds to requests by sending the first bytes of the response
- **Function start type**: View cold start and pre-warmed function invocation rates

Observability is in [limited beta](https://vercel.com/docs/release-phases#limited-beta) for current [Monitoring](https://vercel.com/docs/observability/monitoring#monitoring ) users and can be accessed from the new Observability tab in your Vercel projects.

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)