Those computing ideas (like distributed systems, concurrency and task scheduling) can even be found in even a single program/system. They are often entangled with even broader concepts, like visual layouts, security (authentication, authorization), communication and encryption, control systems, signal processing,… And those are often accidental complexity.

The essential complexity can be easily resolved by talking to domain experts. You will get a nice requirements document afterwards. That’s when the engineering and management concerns appear.