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Business and process

Product backlog

Also known as: backlog, product roadmap items, backlog prioritisation

Definition

A product backlog is a priority-ordered list of everything that could be built into a product: it is not a dated plan, it is continuously revised, and one person, the product owner, is accountable for the order of it.

The operative word is ordered. A backlog where half the items are marked high priority has no priorities at all: the order has to be linear, from what gets built next down to what waits. Items differ in how far they are worked out: the top of the list is described in detail, estimated and ready to start, while the bottom may exist as a single line. The regular refinement session exists precisely to bring the top of the list to a state the team can pick up without further questions.

Prioritisation should not rest on the conviction of whoever argues loudest, so explicit frameworks help. MoSCoW splits items into must, should, could and not this time, which is simple and works well for a fixed scope. RICE scores reach, impact, confidence and effort and produces comparable numbers, which helps when several departments are arguing. Any framework beats intuition for one reason: it makes the basis of the decision visible, so three months later you can revisit it without reconstructing the context from memory.

Three backlog pathologies show up more than the rest. The dumping ground: a thousand items accumulated over years that nobody searches any more, because filing a new one is easier. No owner: priority is set by whoever wrote in the chat last, and the team switches direction weekly. And a backlog with no technical items, where refactoring, dependency updates and debt repayment never enter the list and therefore never happen, until the system starts falling apart and demands attention anyway, in emergency mode.

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