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Virtual host is to use virtual technology to divide a physical server into multiple "virtual" servers. The appearance of virtual host greatly saves the cost of server hardware, so the rental price of virtual host is relatively cheap. The key technology of virtual host is that even on the same hardware and the same operating system, different server programs opened for multiple users are running without interfering with each other. And the performance of each virtual host is no different from that of a standalone host. The virtual host also has its shortcomings. Because multiple users share a server, its access speed and traffic are subject to certain restrictions.
VPS hosting (Virtual Private Server) ("Virtual Private Server", or "VPS" for short) is the use of virtual server software (such as Microsoft's Virtual Server, VMware's ESX server, SWsoft's Virtuozzo) to create multiple Small servers isolated from each other. These small servers (VPS) themselves have their own operating system, which is run and managed exactly the same as a standalone server. A virtual private server ensures that all resources are exclusive to users, allowing users to enjoy the service quality of a dedicated host at the price of a virtual host.
Cloud server, also known as cloud host, is a simple, efficient, safe and reliable computing service with scalable processing power. The cloud host has independent broadband and IP. Users can independently install various operating systems and configure the corresponding operating environment according to their needs. They can purchase on demand and are more flexible in terms of upgrades. In addition, the cloud host also provides double backup, which adds another guarantee for data security.
From the above introduction, virtual host, VPS host and cloud server have their own characteristics. In terms of security and flexibility, cloud server is stronger than virtual host, but the price is higher than virtual host, VPS host is more cost-effective .