That second point is almost never true " the same REST/data API can serve your website and other consumers, e.g. any native mobile apps or third party API consu

That second point is almost never true " the same REST/data API can serve your website and other consumers, e.g. any native mobile apps or third party API consumers" In a reasonably complex application, each interface ends up needing its own shape of optimized APIs. Otherwise the clients become very complex munging/reshaping data or making too many API calls, throwing away a lot of data etc.