Lambda function URLs - AWS Lambda

Lambda function URLs

A function URL is a dedicated HTTP(S) endpoint for your Lambda function. You can create and configure a function URL through the Lambda console or the Lambda API. When you create a function URL, Lambda automatically generates a unique URL endpoint for you. Once you create a function URL, its URL endpoint never changes. Function URL endpoints have the following format:


Function URLs are not supported in the following regions: Asia Pacific (Hyderabad) (ap-south-2), Asia Pacific (Melbourne) (ap-southeast-4), Canada West (Calgary) (ca-west-1), Europe (Spain) (eu-south-2), Europe (Zurich) (eu-central-2), Israel (Tel Aviv) (il-central-1), and Middle East (UAE) (me-central-1).

Function URLs are dual stack-enabled, supporting IPv4 and IPv6. After you configure a function URL for your function, you can invoke your function through its HTTP(S) endpoint via a web browser, curl, Postman, or any HTTP client.


You can access your function URL through the public Internet only. While Lambda functions do support AWS PrivateLink, function URLs do not.

Lambda function URLs use resource-based policies for security and access control. Function URLs also support cross-origin resource sharing (CORS) configuration options.

You can apply function URLs to any function alias, or to the $LATEST unpublished function version. You can't add a function URL to any other function version.