Why might synchronous interaction of components be preferred in system architecture?

In system architecture, synchronous interaction of components is preferred when operation sequence and immediate result are important. This simplifies debugging and understanding data flow, as the caller waits for a response before continuing. This approach is suitable if operations are fast and do not require long waiting, for example, when calling an internal API or working with a database where immediate response is needed.

Example: during user authorization, the application must immediately receive confirmation of successful login to continue working with the session.