Honestly, having worked in both product and partner marketing, I don't think product marketing teams focus enough on partnerships. Product strategy to me is simple, it involves three components: "build, partner, buy". Based on my own experience, product marketing teams are great at executing the "build" aspect of the strategy - new product launches and adoption of new features. However, as companies and products mature, features in new releases become more incremental, so it's important to tell a broader story around your ecosystem. Most product marketing orgs will dedicate a specific role for an individual contributor to build content on product integrations, but the content is usually really dense and heavy - and doesn't do a good job telling the story of a partner ecosystem. I'd rather have someone in product management create those technical documents and presentations. I would really encourage product marketing teams to think more about how they can generate more awareness of their products and solutions through a partners' channels.