AWS Lambda is a compute service that allows you to run code without having to provision or manage servers. Lambda runs your code on a high-availability compute infrastructure and handles all compute resource administration, such as server and operating system maintenance, capacity provisioning and automatic scaling, and logging. You can use Lambda to run code for almost any type of application or backend service. All you have to do is provide your code in one of the languages supported by Lambda.

Your code is organised into Lambda functions. Lambda executes your function only when it is required and automatically scales from a few requests per day to thousands per second. You only pay for the compute time you use—there is no charge when you don't.
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