Lambda
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AWS Lambda is a service that allows you to execute program code without managing servers, such as building, maintaining, and load balancing.
Lambda can execute processing based on any event related to AWS.
Execute a program when you upload a file to S3. Execute a program when you receive communication from a client as an API server. Free up to 1 million requests per month.
An environment where a prepared function is executed when an event occurs.
Functions can be prepared in multiple languages such as Python and Node.js. There is no need to prepare further for the server or the server's OS to execute the function.