The Product Owner is accountable for maximizing the value of the product resulting from the work of the Scrum Team. The Product Owner is responsible for creating and communicating a vision, ordering the Product Backlog, and ensuring that the best possible job is done to delight customers. The Product Owner does not manage the Developers, but collaborates with them and the Scrum Master to optimize the value delivery. The Product Owner does not ensure that the work meets the commitments to the stakeholders, but rather that the work delivers value to the stakeholders. The Product Owner does not keep stakeholders from distracting the Developers, but rather engages them and manages their expectations.
References:
* Professional Scrum Product Owner™ I Certification
* [The Scrum Guide]
* [The Product Owner]