The Product Backlog refinement is a continuous process to create actionable Product Backlogs, enabling a Scrum Team to run Sprint Plannings at a moment’s notice. Consequently, refinement is about creating alignment among all team members about the Why, the What, the How, and probably even the Who regarding the upcoming work for the Scrum team’s Product Goal. As a result, Product Backlog refinement is a critical success factor as it drastically increases the team’s capability to deliver valuable Increments regularly. 

The following 14 first principles describe in broad strokes the foundation of a successful approach to refinement.