A product owner is responsible for maximising Value in a team.

They are accountable for effective product backlog management. This includes:

• Developing and explicitly communicating the Product Goal;
• Creating and clearly communication Product Backlog items;
• Ordering Product Backlog items and;
• Ensuring that the product backlog is transparent, visible, and understood.

Product owners use many different techniques to do the above. They may use User stories as one such techniques.

Product owners must prioritise within the prioritisation.

While Product owners may delegate some responsibilities but are always accountable.

For Product owners to succeed the entire organisation must respect their decisions. Without this support the Product owner will only create beautiful delay. Stake holders with voices louder then the official product owner are in fact the true product owner.