Don't think I've heard someone phrase it this way, but I agree (in some cases) - API first is a good way to go, if only to enforce proper abstractions on the se

Don't think I've heard someone phrase it this way, but I agree (in some cases) - API first is a good way to go, if only to enforce proper abstractions on the server side. We launched our product as an API only (and it still is) and then segmented some API calls as paid calls, and others as free. Our entire business so far is just very simple API calls. It's a remarkably efficient operational model since the payloads tend to be small therefore each response-request cycle is lighting fast.