Audience member notes that the worst cost of modularisation — especially with microservices — is misidentifying domains. Krzywda agrees: he once worked on a project that jumped straight to microservices certain of the domains and got the split badly wrong; they merged services back into a monolith and re-modularised. Don't modularise too early with aggressive techniques. But typical domains (pricing, payments) are safe: if you have price, you have pricing — those boundaries are reliable.