Review definition of stages
DevOps stages are not necessarily specific set of functionalities. It is originally based the lazy 8, created by Gartner, as a way to map business priorities to DevOps activities across the entire delivery pipeline
Here's another relevant resource from Gartner - https://drive.google.com/file/d/1wQrsqRcuCKggkpDnUCuXuNohvagVcZ99/view
However, GitLab, which is organized according to the DevOps stages, may have deviated away from the original intent. It feels, at least to the author of this issue, that stages = specific functionalities, and we should refresh what stages mean.
This issue is a follow-up from https://gitlab.com/gitlab-com/Product/-/issues/3528 to clarify what a stage is and should be and clarify it in the handbook.
Edited by Kevin Chu