Staying Swap-Ready

Abstraction

Part of: Choosing the Right Model

Models improve every few months. A cheaper, smarter tier drops, and the teams that win are the ones who can adopt it in an afternoon instead of a quarter. The difference isn't luck, it's an abstraction : a thin layer between your app and whichever model it uses, so swapping providers is a config change, not a rewrite. This is the payoff of everything in this module. What it is A provider abstraction is a single interface your whole app talks to, something like generate(prompt), instead of calling a specific provider's SDK directly all over the codebase. Behind that interface lives an adapter that translates your generic call into whatever the active provider expects. Combine that with a registry : a lookup of available providers, plus one active provider id you can change in one place. Your app calls the interface; the registry decides which real model runs. How it works The whole app talks to one interface and never names a provider directly: The application code calling generate never changes. To switch models, you flip active. To add a brand-new provider, you write one adapter and register it, the rest of the app doesn't notice. Why it matters This is what makes lessons 1-7 actu

Challenge: Provider Registry