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`/docs/concepts/runtimes` does not exist. Similar pages:

- [Runtimes](/docs/sandbox/concepts/runtimes.md): Vercel Sandbox provides a secure, isolated environment for running your code. This page details the legacy runtime environments, available packages,
- [Runtimes](/docs/functions/runtimes.md): Vercel supports multiple runtimes for your functions. Each runtime has its own set of libraries, APIs, and functionality that provides different
- [Configuring Functions](/docs/functions/configuring-functions.md): You can configure Vercel functions in many ways, including the runtime, region, maximum duration, and memory. With different configurations,

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