We're almost finished with the pipeline, at least in its current form.
The purpose of the deploy stage is to install the new release to production and to do the last round of tests that only verify whether the new release integrates with the rest of the system. Those tests are often elementary since they do not validate the release on the functional level. We already know that the features work as expected and immutability of the containers guarantee that what was deployed as a test release is the same as what will be upgraded to production. What we're not yet sure is whether there is a problem related to the configuration of the production environment or, in our case, production Namespace.
If something goes wrong, we need to be able to act swiftly and roll back the release. I'll skip the discussion about the inability to roll back when...