Client-server architecture is a computing model that divides tasks between service providers, known as servers, and service requesters, known as clients. In this setup, clients send requests to servers, which process the requests and return the necessary data or services. This separation allows for efficient resource management and scalability. The architecture is commonly used in various applications, including web services and databases. Clients can be devices like computers or smartphones, while servers can host applications, store data, or manage resources. This model enhances performance and enables multiple clients to access shared resources simultaneously.