VPS (Virtual Private Server) and dedicated server (Dedicated Server) are two common hosting server solutions. They have the following main differences:

　　Resource allocation method:

　　VPS divides a physical server into multiple virtual servers. Each VPS has independent resources (such as processor, memory and storage space). A dedicated server is a complete physical server with resources exclusively owned by a single user.

　　Performance and scalability:

　　Dedicated servers offer higher performance and scalability because they have more resources (such as processor cores, memory, and storage). The performance of VPS is limited by the resources of the physical server. When other VPS resources on the physical server consume a large amount, the performance of the VPS may be affected.

　　Management permissions:

　　On a dedicated server, users have full administrative rights and can freely configure and customize the server environment according to their own needs. On a VPS, the user's management rights may be restricted and certain underlying operations cannot be performed.

　　safety:

　　Dedicated servers are generally more secure due to the independence of resources, and users have better control over the security and protective measures of the server. The security of a VPS depends on the security of the physical server. A VPS that is attacked may have an impact on other VPSs.

　　cost:

　　VPS is relatively more economical because multiple VPS share physical server resources, and users can choose the appropriate resource configuration according to their own needs. Dedicated servers are more expensive because users have exclusive access to all physical server resources.

　　To sum up, VPS is suitable for small and medium-sized websites and individual users, providing a more flexible and economical solution; while dedicated servers are suitable for large websites, enterprise applications and businesses that require high performance and security, providing higher performance , scalability and freedom. Choosing a VPS or a dedicated server should be decided based on specific needs, budget, and business size.