AWS: Building a multi-tenant SAAS Application

I've been needing to understand how to design, and build, a multi-tenant web app (both for my own knowledge, and for professional reasons) and today I took the leap and just DID IT!

I ran through this AWS walk-through SAAS Factory and in about 3 hours had the working application up and running!

This included about 45 minutes of head-scratching when the instructions to "just upload this CloudFormation yml file and then start doing all these steps" only created about 10 resources. I knew something was wrong and figured it out.