Releasing
Releasing is usually the final step of a complete CI/CD pipeline. The process can be performed, in simple environments, together with deployment in production.
However, nowadays, it's common to split deployment and releasing into two different steps, and this allows more sophisticated (and often safer) ways of releasing software versions to end users. To do so, the most basic ingredient is to have different versions of the software available in production at the same time and to route users to each version by following different criteria (which is done by operating at a network level, routing each request to the desired target version). Let's look at some scenarios opened by this kind of technique:
- Blue-green deployment: Two versions of production environments (including database and other external systems) are released in production. This includes the version we want to release (identified as blue or green) and the previous version (identified by the...
