What is BufferZone technology?

Hi,
i want to know about BufferZone Technology. Anyone can explain what is this technology about?

It is a program to safeguard your computer.
BufferZone Pro transparently neutralizes threats, including viruses, spyware, and other types of malicious software, by redirecting their disk, registry and other modifications on your PC to an isolated Virtual Zone (the “buffer zone”). Any modification requested by a program running in the Virtual Zone is performed within the boundaries of the isolated area and does not effect your PC’s actual configuration, data or files.

Here you can download BufferZone.

I'm running Bufferzone 2.70 and am quite pleased. This program offers a great deal of protection for your computer. BufferZone keeps all files downloaded from the internet in a virtual hard drive folder and you can even install programs inside of the virtual hard drive before you actually install them to the operating system.