Creating an artificial intelligence prototype has become an extremely simple process: it suffices to send a request to a model, receive a response, and show the result to a user. As long as each request remains an independent event, the entire interaction chain is understandable, easy to test, and easy to debug.

It is precisely this initial simplicity that creates an illusion of development ease, causing many early AI applications to appear more ready for use than they actually are. However, the transition from isolated requests to complex production systems reveals hidden difficulties.

Building reliable systems for real-world operation requires abandoning the idea of exclusively independent requests in favor of durable workflows capable of handling failures and preserving task state.