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Environment Variables | Vercel Docs

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Learn how to use Vercel Environment Variables, which are key-value pairs configured outside your source code that change depending on the environment.

Environment variables Skip to content Copy page Copy page Environment variables Copy page Copy page Environment variables are key-value pairs configured outside your source code so that each value can change depending on the Environment . These values are encrypted at rest and visible to any user that has access to the project . It is safe to use both non-sensitive and sensitive data, such as tokens. Your source code can read these values to change behavior during the Build Step or during Function execution. Any change you make to environment variables are not applied to previous deployments,

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