However, you may not have taken the time to think about how they might be implemented in your operating system.

But when you need to switch from one operating system to another—be it because of a change in business direction, technology enhancements, or cost savings—making the switch can be tough.

They could be on the same operating system image or they could be on opposite ends of the world or any where in between.

The process of switching from one task to another in a multitasking operating system.

We therefore grab all the memory we need from the operating system right at startup.