"VPS" (virtual special server), "cloud host" and "cloud server" are three concepts, which are usually used to describe different types of virtualization and cloud computing services.

　　VPS (virtual special server):

　　VPS is a server division based on virtualization technology, dividing a physical server into multiple virtual servers.

　　Each VPS has an independent operating system, independent resources (CPU, memory, storage) and independent network configuration.

　　VPS usually provides fixed resource allocation. Users have greater control and can manage and configure the server by themselves.

　　Cloud host:

　　Cloud hosting is a virtual server instance provided on the cloud computing platform, usually running in a virtualized environment.

　　Cloud hosts can be quickly expanded or reduced when needed. Users pay for the amount of resources used, and have strong elasticity and scalability.

　　Cloud hosts usually host in the data center of cloud service providers, and users can access them through the Internet.

　　Cloud Server:

　　Cloud server is a wider term that can include VPS and cloud hosts, which refers to any virtual server provided in the cloud computing environment.

　　The characteristic of cloud servers is based on the cloud computing architecture, which has the characteristics of elasticity, scalability and payable on demand.

　　Main differences:

　　Architecture and environment: VPS is a traditional virtual server, while cloud hosting and cloud server are virtual servers provided on the cloud computing platform. Cloud computing platforms provide higher -level elasticity and automation.

　　Elasticity and retractability: Cloud hosts and cloud servers have stronger elasticity and scalability, and resources can be quickly adjusted according to demand.

　　Billing method: VPS is usually allocated according to fixed resource allocation, while cloud hosts and cloud servers usually bill according to the actual resource used.

　　These terms may have different explanations in different contexts, and the specific differences may also vary from cloud service providers. When choosing a service, it is best to understand the definition and service characteristics of the provider in detail.