Today we are introducing Vercel Managed Images (VMI), a set of versioned, open-source base images you can use as-is or extend. The source for every image lives in the public vercel/sandbox repository.

Managed images replace Sandbox runtimes, which are now deprecated. Starting with version 3 of the Sandbox SDK, new sandboxes default to vercel/sandbox/universal:latest . It ships with Node.js, Python, common coding agents and standard utilities, so most users never build a custom image or install packages at boot.

The universal image switches our default operating system from Amazon Linux to Ubuntu, a lighter and more widely used system across the industry.

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Every managed image gets a nightly release.…