Definition: A DEEP Backlog is a suggested objective of a product backlog grooming session. DEEP is an acronym used to indicate a few key traits of an effective product backlog. Each letter of DEEP in the acronym stands for: Detailed Appropriately: Items in the backlog contain enough contextual information to be understood and discussed.
Emergent: It is easy to add new stories and items as new information arises.
Estimated: The amount of effort involved with each item is roughly estimated with a standardized measure.
Prioritized: Items on the backlog are ranked based on their value and the strategic purpose(s) they serve.