Cloud hosting, VPS (virtual special server) and physical servers are three different types of computing resources. They have some differences in architecture, resource allocation and management methods.

　　Cloud hosting:

　　Cloud host is a virtualized server solution based on cloud computing architecture. It uses physical server resources on the cloud platform to allocate virtualization of computing, storage, and network resources. Cloud hosts usually provide services in an elasticity and scalability. Users can dynamically adjust computing resources as needed and pay as actual usage. Cloud host providers are responsible for hardware maintenance and infrastructure management, and users do not need to care about the bottom hardware details.

　　VPS (virtual special server):

　　VPS is a solution to divide a physical server into multiple virtual servers. Each VPS instance has an independent operating system, exclusive computing resources, disk space and network connection. VPS usually provides higher flexibility and control, and users can customize configuration and installation software according to their needs. Although VPS is virtualized, it is relatively independent of the physical server in terms of performance and resource distribution.

　　Physical server

　　Physical server refers to the actual hardware server with independent physical resources (CPU, memory, storage, etc.). Physical server can be purchased or leased by users, and the operating system and software can be configured directly. Users have the highest control of hardware and software, but they also need to bear more management and maintenance responsibilities.

　　Key differences:

　　Elasticity and scalability: Cloud hosts have elasticity and scalability, and users can adjust resources according to demand. VPS usually has a certain scalability, but is limited by the limitation of physical server resources. The resources of the physical server are fixed and are not easy to expand.

　　Management and maintenance: Cloud hosting and VPS are responsible for hardware management and infrastructure maintenance by service providers. Users do not need to care about details at the level of physical server. Physical server requires users to manage and maintain themselves.

　　Cost: Cloud hosts and VPS are usually provided in the model of paying on demand, and users pay according to the actual amount of use. Physical servers may require one -time purchase or long -term rental, and the cost is more fixed.

　　Selecting cloud hosting, VPS or physical server depends on your needs, budget and technical requirements. Cloud hosts are suitable for elastic requirements and scenarios that do not need to manage hardware. VPS is suitable for scenarios that require higher control and custom configuration. The physical server is suitable for scenes with higher requirements for hardware or needed exclusive resources.