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What makes a PRD actually useful vs just ceremonial?
I've seen PRDs that teams actually reference daily and PRDs that die in Confluence the moment they're published. The difference is not length or format — some of the best PRDs I've read are 2 pages, and some of the worst are 20-page templates filled in mechanically.
What separates a PRD that actually drives alignment from one that's just ceremony? Is it the structure? The specificity? The process around it? I've been writing PRDs for 5 years and I still find that most of them end up as artifacts nobody reads after sprint planning.
2 responses
The single thing that separates useful PRDs: they contain the decisions already made and the decisions still open. Most PRDs are a requirements list. Useful PRDs are a decision log. Engineers can unblock themselves from a decision log. They can't from a requirements list.
The PRD test I use: can an engineer read this document and say no to a feature request from a stakeholder by pointing to a specific line? If the PRD does not give engineers ammunition to protect scope, it is not a spec — it is a wish list. The most useful PRD I ever wrote had a section called "explicitly not building" that was longer than the "building" section. It survived three scope creep attempts because stakeholders could see that each request had already been considered and rejected with a reason. The ceremonial PRD, by contrast, describes what to build but never what NOT to build. It cannot say no because it never said no to anything.