Shopware is a good fit if at least one of these applies:
You sell B2B, B2C or both from one system.
Your pricing and assortment logic is too complex for a pure SaaS shop system.
You need an ERP, PIM or CRM backend connected in production, not just exported to.
Data sovereignty and hosting in Europe are a hard requirement.
You want to be able to decouple frontend and backend in the future without going headless today.
If you're starting with twenty products and no backend integration, Shopware is oversized. We'll tell you that in the first conversation, too.