Throughout Chapter 5, Scaling Your Infrastructure, our architecture changed quite a bit. We explored different ways to scale out applications in AWS. One of the major technologies that we left out is the concept of containers. Containers are at the heart of the systems development life cycle (SDLC) of many major technology companies.
So far in the book, we used our personal computer to develop our application. This works well for simple projects such as our helloworld application. On more complex projects with many dependencies, it's a different story. Ever heard of issues where a certain feature works on a developer's laptop, but not for the rest of the organization or, even worse, not in production? A lot of those issues come from the differences between environments. When we built our staging and production environments, we relied on CloudFormation...
