A product backlog is a prioritized list of features, enhancements, and bug fixes that a team maintains for a product. It is used in Agile development methodologies, such as Scrum, to manage and track the work that needs to be done.The product backlog is a dynamic document that evolves over time based on feedback, changes in business requirements, and user needs. It is typically managed by the product owner, who is responsible for maintaining and prioritizing the backlog.Items in the product backlog are generally described as user stories, which are brief descriptions of desired functionality from the perspective of the end user. The backlog also includes other important information, such as acceptance criteria, estimates of effort and complexity, and dependencies.The product backlog is a living document that is continually refined and reprioritized as new information becomes available. It serves as a communication tool between the product owner and the development team, ensuring that everyone is aligned on the goals and priorities for the product.Teams typically pull items from the top of the product backlog into their sprint backlog during the sprint planning meeting. The sprint backlog contains a subset of the product backlog items that the team commits to complete within a specific sprint.Overall, the product backlog is a critical tool for managing and prioritizing work in Agile development, helping to ensure that the most valuable features and improvements are delivered to customers in a timely manner.