There are several misleading comments here making the incorrect assumption that the term “concurrency” in software has something to do with time. In software de

There are several misleading comments here making the incorrect assumption that the term “concurrency” in software has something to do with time. In software design, when we talk about concurrency, we are talking about coordinating distinct logical processes (not necessarily OS processes). This term has limited similarity to the common-knowledge understanding of concurrent events “happening at the same time”. Logical (not temporal) ordering of operations is implemented using process synchronisation techniques. One of the important differences between parallelism and concurrency is that parallelism is typically restricted to almost identical process definitions which aim to exploit the physical architecture of processing units. Concurrency, however, makes fewer assumptions about the physical architecture and focuses on software design in a more abstract way with a primary objective of coordinating resource utilisation of competing processes (especially physical resources).