Developing a 3-tier Serverless web application using AWS Serverless Application Model (SAM) framework

With AWS SAM (Serverless Application Model), we can create serverless resources on AWS to build & develop serverless applications for instance serverless resources like AWS Lambda, AWS API Gateway, etc. Not just that instead of writing the Lambda directly on AWS Console, we can use SAM to develop, build and test Lambda locally before it can be pushed to AWS Cloud, this saves a lot of time in debugging the Lambda at the local system itself and ensures productivity.