Expert Python Programming - Third Edition

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 (the developers team or Dev for short) and different people are responsible for deploying and maintaining the execution environments (the operations team or Ops for short).

All tasks related to server maintenance, monitoring, deployment, configuration, and so on are often put into one single bag called operations. Even in organizations that have ...