Start abstracting and splitting up yaml configurations that would get too big as development goes on. Serverless specific yaml configurations will be explained and we also take care of API gateway default error responses to be CORS compatible.

Serverless Framework YAML abstractions and common configs

04:34

Split up the functions and enable a RESTful API. Implement REST with Python specific naming and coding conventions. Python modules are used properly and we have ways to execute the functions locally. We also implement a common reusable API response module. Finally common deployment errors are demonstrated.

Creating RESTful API functions

Preview 09:19

Log into the AWS console and take a look at what was deployed in the default serverless configuration so that we know how we can improve upon it later.

Initial Look at AWS Console Resources

04:49

+ – Infrastructure as Code with Terraform

3 lectures 27:51

Use Terraform standard practice to create a more isolated environment for our lambda functions. The back end code also gets an update to work in tandem with the infrastructure code.

Creating VPCs and Subnets - Networking for Lambdas

15:58

Do a Terraform apply and have a look at what resources get generated on AWS.

Terraform Apply and what gets created on AWS

05:20

Update the Serverless code to use the new VPC and private Subnets then take a look in the AWS console to see the delta between the new infrastructure and default one.

Update back end to use new infrastructure

06:33

+ – Authentication with AWS Cognito

4 lectures 35:05

Dive into more Terraform code to create a User Pool and one app client for the backend.

Creating an AWS Cognito User Pool in Terraform

17:16

Update the backend code for Bearer Authentication and common utilities for verifying a JWT. The Lambda function gets locked down and an execution policy gets generated on successful auth.

Bearer Authentication for the back end

09:48

Look through AWS console on the User pool to confirm our Terraform code outputs. We also leverage the AWS hosted UI to go through the OAuth authentication code flow and retrieve the OAuth code.

Look at AWS Resources for the User Pool and begin authentication code flow

06:00

Go through a complete Implicit grant flow and retrieve the access token to make an authenticated CURL call to our Lambda function.

Complete Implicit Grant flow

02:01

+ – Websockets

1 lecture 08:08

We explore using the Serverless framework and boilerplate code on how to bring up a sample chat app. You will learn to use DynamoDB to manage connection sessions, connection to DynamoDB securely and how to manage auth for the websockets.

Chat App with Lambda Websockets

Preview 08:08

Use the code template provided and secure the chat endpoint for 2 users and make sure DynamoDB calls are routed inside the custom VPC.

Secure the Chat Application

1 question

+ – Final Thoughts and Thanks

1 lecture 04:11

We look at https://github.com/serinth/serverless-python-boilerplate and how to utilize it for bootstrapping applications quickly. Additional functionality is included in the boilerplate.

Boilerplate with additional content and thanks

04:11

Requirements

Basic understanding of programming concepts
Basic understanding of public cloud concepts

Description

This course takes you through building Serverless applications quickly and securely on Amazon Web Services by leveraging:

- Terraform for infrastructure code

- Serverless Framework (Python) for quickly deploying and structuring our code (REST & Websockets)

We go beyond the defaults and will construct infrastructure as code and create our own VPCs, Subnets and tackle OAuth2.0 authentication.

By the end of the course, you should be able to comfortably understand how to create a REST and websocket application from scratch and leverage the boilerplate to start generating business value immediately.

The course does require a high quality connection to get 1080p viewing due to font sizes in code. I've made the entire course downloadable in case you are on a slower connection so you can watch offline! Ensure that you set your quality level to "Auto" to get the best resolution possible.

Who this course is for:

Junior to Senior Software Developers/Engineers