This sample project demonstrates how to deploy a Lambda Function that has a layer added to it.

The SAM template provided deploys two Lambda functions. Both Lambda functions attempt to import the `PyMySQL` package.

However, only one of the Lambda functions has the `PyMySQL` layer which allows it to import the package successfully.

This pattern tests both Lambda functions to illustrate the difference when there is a layer added to a Lambda function.

One use case for Lambda layers is to have packages like `PyMySQL` shared across various Lambda functions that require connections to RDS MySQL.

Using layers reduces the size of uploaded deployment archives and makes it faster to deploy your code.