Most discussions about AI still feel very “future-oriented”. But after spending the last months building fitness and productivity apps, I started noticing something different happening in practice: AI is no longer the product. It’s becoming invisible infrastructure. And honestly, I think this changes the role of developers much more than people realize. The interesting part is not the AI itself anymore Generating text, recommendations or automations is becoming increasingly accessible. The difficult part now is everything around it: architecture, privacy, synchronization, context validation, UX, scalability, observability, performance, reliability. Especially in health and fitness apps. A workout suggestion generated in 2 seconds means nothing if: data synchronization breaks, the context is inconsistent, the mobile experience feels slow, health integrations fail, users lose trust in the platform. The engineering complexity didn’t disappear. It just moved.…