A server is a computer system that serves or provides a specific service to a group of users. A typical service could be one or more of the following:
- File Sharing
- Website Hosting and Processing
- Email Hosting and Processing
- Application Sharing
- Remote Working
A Server is often mistaken as specific hardware when infact any computer system can act as a server, even a laptop!
A server is simply a computer system that is dedicated to providing a specific service to a group of users or even a single user.
A server can be a high powered expensive computer system, or an extremely low cost device but obviously, the more people using a server, the more powerful it would need to be in order to provide the service or services at a "nice" speed. Just like a computer - the more you install and the more open programs you have open, the slower and less responsive it becomes.