Many companies today need interfaces for portals, mobile access, third-party systems, or internal integrations. A REST server is often the right step for that—but only if it is not just a thin shell draped over existing legacy logic.
With Delphi, you can build high-performance server components and sensibly structure shared business logic—provided architecture and responsibilities are clearly defined. Which rules are allowed in the client, which belong on the server, which data is authoritative, and how do you keep errors traceable?
Especially in mature enterprise systems, an API is not a purely technical add-on. It also determines how processes can be extended, secured, and operated going forward. That is why we always plan REST servers together with the data model, deployment, and observability.
In the end, it is not the number of endpoints that matters, but whether client, service, and data layer form a system that remains functionally consistent and operationally robust.