In agile development, changes to requirements are a common and expected part of the process. The

product backlog, which is a prioritized list of tasks and requirements for the project, is the main tool

for managing these changes.

Requirement Identification: New requirements or changes are identified during various stages of the

development process, often during interactions with stakeholders or as the team gains a deeper

understanding of the project.

Product Backlog: These new requirements are then added to the product backlog. The product

backlog is managed by the product owner, who is responsible for maintaining its order of priority

based on the project's goals and stakeholder feedback.

Prioritization: The product owner prioritizes the backlog items to ensure that the most valuable and

important features are addressed first. This prioritization helps in managing scope and delivering

value incrementally.

Sprint Planning: During sprint planning, the team selects items from the top of the product backlog

to include in the next sprint, based on their capacity and the priority set by the product owner.

Reference: "Agile Estimating and Planning" by Mike Cohn.