[Parallel vs serial] A computation being compute-bound or i/o-bound refers to its boundaries in time being more defined either by computing (for example, numerical calculations) or communicating (mainly just waiting to receive inputs or to send outputs). In broad terms, true parallelism is more relevant to increasing throughput in compute-bound use cases, while pseudo-parallelism can be adequate for increasing throughput and reducing latency in i/o-bound use cases.