Various Scrum Backlogs I have seen in my career have become a 'Black Hole' of issues.
They contain 500+ open issues and sometimes having issues, which have been open for
more then 2 years, where in initial issuer already has left the company.
Finding proper things to work on becomes a 'needle in a haystack' and having such a backlog
does not provide any insight any longer.
Although Mary Poppendieck makes a suggestion to 'Just Burn Your Backlog' and only accept issues with one of three possible priorities: "Now, Next, Never", not all organizations are willing / brave enough to do that (yet).
From the entire backlog a Scrum team picks items to include in the current sprint.
During the sprint they are responsible for working on the issues and getting them done.
Unfortunately issues do not magically become 'Ready for development'.
Most of the time issues need some kind of refinement for that.
The purpose of those refinements is to talk about some issues on the backlog in order to comprehent the
issue and split them into smaller items, so that those items can be accepted to be worked upon in the current sprint.
In order to prevent creating 'waste' by spending time to refine
an entire backlog of stories, the organization needs to prioritize
what issues needs to be made ready. This process of prioritization can be look
at a like Sales Funnel, where issues progress from stage to stage in a controlled manner.
In this article I will explain the stages in the funnel,
which takes some inspiration from 'Getting Things Done' by David Allen.
I envision a backlog where all issues in a backlog have been assigned
to one of following four core priorities / stages.
The team should focus: