Product marketing can be many things.

It can be a way to communicate new products and features.

It can be a way to gather insights on markets and customers.

It can be a way to produce material that helps sales selling.

It can be a way to decide what the product is about and how it should be expressed.

It can be a way to strategize how to launch a product or a feature.

It can be a way to create content for marketing campaigns.

Product marketing can be many things. And the best product marketing is all of that at the same time.