This incident has been resolved.

Our hosting provider has implemented a mitigation strategy—the marketing website and documentation should now be fully available without degraded performance issues.

We will continue monitoring the situation to ensure stability of Calibre's sites.

Due to an outage of our hosting provider, Vercel, our marketing website and documentation might be unavailable to some visitors or you might observe downgraded performance.

The Calibre application, tests and APIs are NOT affected—your monitoring is running without any issues. You can access your Calibre account at https://calibreapp.com/home.