ELI5: Explain Like I'm 5

Virtualization

Virtualization is like a magic trick that computer experts do to make things run faster. It takes a computer and helps it act like it has more than one! So instead of just one computer with one operating system, it can look like it's a bunch of different computers, each with its own operating system. That way more people can use the same computer at once, so everything is more efficient and faster.