When building software the most common scenario is that you have a team building the solution, application and/or service. You typically have front-end, back-end and full-stack developers, you have testers and designers, and more. However, working in a team is not always easy. Back in the days we could all have our software running locally and we just grabbed the latest version/commit and hacked away. For web applications the use of localhost worked just fine for almost everyone. But with cloud based solutions where you have a strong connection to one or more cloud services, it becomes a little bit more complex - you might have connections to cloud services such as storage, databases, web service and more. In most cases these resources can be spun up by each developer or shared and then managed by a configuration/environment file.
