What is one purpose of Iteration Goals?

One purpose of iteration goals is to align team members to a common purpose and vision. Iteration goals are a high-level summary of the business and technical goals that an Agile Team agrees to accomplish in an iteration. They help the team and the product owner to reach agreement on the business value they intend to deliver, align their work to their team PI objectives, and ground everyone on their shared purpose. Iteration goals also provide transparency and management information, as well as support the coordination and dependency management of the Agile Release Train (ART).