If you want to know the relevant answers about what is a server and its classification? Read this article and you will easily find the answer to this question.
About the definition of server:
A server is a type of computer. It operates quicker, bears more load, and costs more than a standard computer. Servers offer computing or application services to other network clients. They possess high-speed CPU processing power, dependable long-term operation, robust I/O external data transfer capabilities, and superior scalability.
Based on the services rendered by the server. It's generally understood that the server has the capacity to handle service requests, provide services, and ensure service delivery. As an electronic device, the internal structure of a server is complex. However, its internal architecture isn't vastly dissimilar to that of a standard computer.

Regarding server classification:
Observing servers from different angles can classify servers in different ways. Let's delve into the categorization of servers from various perspectives.
1. Based on the architecture, servers can be split into two crucial categories:
Servers with IA architecture and servers with RISC architecture.
The main basis for this classification is the unique processor architectures employed by these two server types. The processor used in servers with RISC architecture is known as a reduced instruction set processor. On the other hand, servers of the IA architecture use a CISC architecture, an acronym for Complex Instruction Set Computing.
The two frameworks have been engaged in a competitive rivalry for an extended period. And both have achieved rapid development. The IA architecture server adopts an open architecture. Thus, it boasts a vast array of hardware and software backers and has achieved significant advancements in the past few years.
2. Based on the server's capacity:
Servers can be categorized into workgroup servers, department servers, and enterprise servers. This method of classification is somewhat traditional, primarily focusing on the scope of the server's application environment.
3. Servers can be classified into various categories based on their distinct roles.
Such as file/print server, which is the earliest type of server. To this day, this kind of server is still widely used in office environments.
The above is an introduction to what a server is and its classification.