When one computer provides services to another computer, this concept is known as ?

In computer networks, the client-server model is a common way to structure communication between devices. In this model, one computer acts as a server, and another acts as a client. The server is a powerful machine that provides resources or services like files, websites, applications, or data storage. The client is a computer or device that requests and uses these services provided by the server.

For example, when you use a web browser to open a website, your device is the client and the website's hosting system is the server. The server listens to your request, processes it, and then sends the required data back to your client computer.

This system is used in many areas such as the internet, local area networks (LANs), file sharing, email, and cloud computing. It helps in better management, centralized control, security, and scalability.