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Product Management is more of an art than a product management job. The more mature the product is, the more it makes sense to follow conventional methods. Product managers need to know what their customers are interested in and what they want to do to build a new product. It's important to know when you start a new project and focus on the customer base, rather than the user base, the product will need to be a product that is more mature than a new one. Product management should be more focused on customer satisfaction and customer satisfaction.