Product Backlog Item (PBI)

Items in the Product Backlog are called Product Backlog Items (PBIs) in Scrum.

A PBI may represent any need such as: Business Functionality, Technical Enhancement, Change request, Defect, Support ticket, etc.

Scrum does not prescribe any specific way to write PBIs. Many teams find lightly written User Stories (a practice from XP Engineering Practices) to be a useful practice.

Suggested Reading:

1. How to Write Good User Stories by Kamlesh Ravlani.

2. Becoming User Centric with User Stories by Kamlesh Ravlani.

3. Benefits of Effective User Stories by Kamlesh Ravlani

Also see: User Story, Spike, Technical Debt, Product Backlog Refinement