Product strategy
The product planning module is where you can simply and transparently connect knowledge of your customer to what features you need to build. Sapeum acts as a repository for your collected knowledge of the market and customer including pains and workflows and customer needs. Sapeum then helps you ideate and prioritize features that solve these customer needs, giving you your roadmap.
Be sure to read the primer on product strategy if you're just starting out with Sapeum or if you haven't used a "customer-needs"-oriented approach to building product before.