I authored the post and yes you are correct about the AWS Lambda being another service. I have since modified it based on a users suggestion to reflect.

I guess the point was that by adding the middleman between it there was more control --- We are self-funded and small group of people. We can't afford to hire a bunch of people to know about containers and servers and every little detail.

Thanks for your comments! Didn't expect so many views so quickly on this...