Subsystems within a system are major divisions that must consist of more than how many processes?

Subsystems within a system represent distinct areas that serve specific functions or tasks, contributing to the overall performance and objectives of the system. To qualify as a subsystem, it must contain at least one process. This means that even if there is a single, defined function or operation taking place, it can be considered a subsystem.

Having just one process allows for the identification and management of that process within the larger system context. It recognizes that even simple or singular functions can be integral to the functioning of the total system.

In contrast, to be considered more complex divisions like "functional areas" or "business units," there may be a requirement for additional processes. However, the basic definition of a subsystem is met with just one process, making it the easiest condition to satisfy.