In recent years, with the increase of people's mobility, with the development of economy and the improvement of people's quality of life, general buildings have been unable to meet people's requirements for personal and property safety...

Cloud computing is a kind of distributed computing. It refers to decomposing huge data computing processing programs into numerous small programs through the network "cloud"...

Desktop virtualization is the installation of a virtual host system on a physical server, which simulates the hardware resources required for the operation of the operating system, such as CPU, memory, network cards, storage, etc....