The activities of product backlog management include specifying the characteristics of the product, creating user stories, and ordering the user stories in the product backlog. User stories are descriptions of features that will be implemented in the product. They are typically written from the perspective of the user. Each user story has a unique identifier, a description, and a set of acceptance criteria. The product backlog is a prioritized list of user stories. The product backlog is used to communicate the features that will be implemented in the product.