The Twelve-Factor App

The main requirement for painless deployment is building your application in a way that ensures that this process will be simple and as streamlined as possible. This is mostly about removing obstacles and encouraging well-established practices. Following such common practices is especially important in organizations where only specific people are responsible for development (developers team or Dev for short) and different people are responsible for deploying and maintaining the execution environments (operations team or Ops for short).

All tasks related to server maintenance, monitoring, deployment, configuration, and so on are often put to one single bag called operations. Even in organizations that have no separate teams for operational tasks, it is common that only some of the developers are authorized to do deployment tasks and maintain the remote servers. The common name for such a position is DevOps. Also, it isn't such an unusual situation that every member...