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Lambda

Run code in AWS without provisioning any servers.

You are charged based on the number of requests, their duration, and the amount of memory used by your Lambda.

Charged forCostNote
Requests$0.20 per month per 1 million requestsThe first 1 milion requests per months are for free
Duration$0.00001667 per GB-secondThe first 400,000 GB-seconds per months are for free

Versioning

You can manage multiple versions of lambda functions using aliases, and use $LATEST to reference the latest one.

Concurrent Executions

There is a limit of lambdas that can run on the same time on the same region: 1,000 per region. You can improve the limit by subitting a request to the AWS Support Center.

You can also reserve some concurrent executions for some critical functions.

Execution Environment

lambda execution environment