TL;DR — A feature is semantic meaning + code + runtime behavior, all three at once. Its category (UI, Business, Data, Cross-cutting) predicts how hard it will be to move. Cross-cutting features are features, so name them first. And a …

I have seen a lot of “AI modernizes your monolith” demos, and they all trip on the same rock. You ask the model where a capability starts and stops. It answers with total confidence. And it is wrong in the one spot you …