In this module, you deploy your application code to AWS Lambda, a serverless computing service. With AWS Lambda, you don’t need to worry about server management or capacity planning. You simply upload the code you want to run, and AWS runs the code whenever a configured event trigger occurs.
One of the event triggers you can use with Lambda is Amazon API Gateway. Amazon API Gateway lets you configure HTTP endpoints that forward requests to your AWS Lambda functions. Between Lambda and API Gateway, you can build a fully functioning web application without provisioning or managing any servers. Further, both Lambda and API Gateway are billed on a pay-per-use basis, meaning you only pay for what you use.
In the following steps, you walk through setting up a Lambda function and configuring HTTP routes with API Gateway using the AWS Command Line Interface (AWS CLI). If you are building an application using Lambda and API Gateway, use a tool such as AWS Serverless Application Model (AWS SAM) or the Serverless Framework to manage your serverless applications using infrastructure-as-code.
Time to Complete Module: 20 Minutes
In this module, you deployed your Lambda function and configured your REST API with API Gateway. Then, you saw how your application was working and invoked an endpoint to test it.
In the next module, you walk through all of your application functionality. You create a new user and use your credentials to log in. Then, you record some game scores for your user, check the top scores for your user, and check the top scores overall.