Both Product Owners and Product Managers play significant roles in product development, but their focus and responsibilities differ.
A Product Owner is a key player in agile Scrum teams. They decide what the development team should create by prioritizing requirements from the backlog and continuously liaising with the team. They focus on the details, meaning they work closely with the development team to ensure the work aligns with the product vision and customer requirements.
On the other hand, the Product Manager is responsible for the long-term vision of the product. They focus on the "why" and "what" of the product. They need to understand customer needs, the market, competitors, and trends. Their responsibilities include defining product strategy, collaborating with various teams (like marketing, sales, customer service, etc.), and communicating the product vision to all stakeholders.
In short, while the Product Owner is more focused on the day-to-day work and the requirements of the development team, the Product Manager focuses on the strategic side of the product. But both roles are important and complement each other to create a successful product.