Explanation
The Product Owner (PO) is the Agile team member primarily responsible for maximizing the value delivered by the team by ensuring that the team backlog is aligned with customer and stakeholder needs1. As a member of the extended Product Management function, the PO is the team's primary customer advocate and primary link to business and technology strategy1. The PO is also responsible for maintaining and prioritizing the Program Backlog, which is the single source of truth for the upcoming features of the system2. The PO works with the Product Manager, who owns the Vision and the Roadmap, to define and sequence the features in the Program Backlog2. The PO also collaborates with other POs in the Agile Release Train (ART) to manage dependencies and ensure alignment across teams1. References: Product Owner - Scaled Agile Framework, Program Backlog - Scaled Agile Framework