Twelve-factor applications

Despite the characteristics of the cloud, there several factors that make an application a cloud-native application, and these can be found in the The Twelve-Factor App manifesto, available at https://12factor.net/

Let's analyze these twelve factors one by one.

Code base

The first factor is related to the source code, where it is kept, and how it should be kept. Every change in the code must be saved and tracked into the source code repository. Nowadays, there are plenty of choices: GitLab, GitHub, Bitbucket, Stash, and the old SVN (it's a revolution, so switch to Git). All of the code, including infrastructure as code, should be versioned, and each version potentially corresponds to a...