In which application scenario is it necessary to make changes to the XML configuration without recompiling the source code?

Changes in XML configuration without recompiling the source code are usually necessary in scenarios where the application uses external configuration files to set up behavior, for example, in Spring Framework or other frameworks that support inversion of control (IoC) and dependency injection (DI).

Example: if you need to change database connection parameters, cache settings, or replace an interface implementation with another, it is enough to modify the XML configuration without touching the source code. This allows flexible management of the application's behavior without the need to rebuild and deploy a new build.

This approach is useful for configuring environments (dev, test, prod), where parameters change but the application logic remains unchanged.