What are Running programs at the same time is called?

Running programs at the same time is called multitasking. This allows a computer's operating system to manage multiple processes simultaneously, enabling users to switch between applications without closing them. Multitasking can be either cooperative, where programs voluntarily yield control, or preemptive, where the OS allocates time slices to each program. This capability enhances productivity by allowing users to perform various tasks concurrently.