We cover what Lambda is, and review what we'll learn: Functions in Golang/NodeJS, and using Layers.

We see how to create a Lambda function in the console. We'll start with a simple Golang function.

We create a Lambda function using just the CLI this time. We'll also use NodeJS so you can see how they differ (or don't)!

We update our NodeJS function to do a bit more, which requires pulling in an NPM package, thus creating a node_modules directory that the program needs to run.

We what Layers are, and how they can help improve our function update time.

We see another use case for Layers. We grab a Layer that provides a custom Lambda runtime. This one lets us write PHP lambdas!