Inter Process Communication (IPC) refers to the mechanism through which different processes running on a computer system can communicate with each other.

In a multi-tasking environment, where multiple processes are running simultaneously, IPC plays a crucial role in enabling these processes to exchange data, share resources, and synchronize their activities. IPC allows processes to send and receive messages, signals, and data between each other, regardless of whether they are running on the same machine or on different machines connected over a network.

This communication can take place through various methods, such as shared memory, pipes, message queues, sockets, and remote procedure calls. One of the key benefits of IPC is that it enables processes to work together cooperatively, allowing them to collaborate on complex tasks and share information efficiently.

For example, in a client-server architecture, IPC allows the client process to send requests to the server process, which then processes the requests and sends back the results. IPC also plays a crucial role in ensuring the security and integrity of the system, as it allows processes to communicate in a controlled and secure manner.

By using mechanisms such as authentication, encryption, and access control, IPC helps prevent unauthorized access to sensitive data and resources. Overall, IPC is an essential component of modern computer systems, enabling processes to communicate and collaborate effectively, leading to improved performance, scalability, and reliability.

By facilitating seamless communication between processes, IPC helps in creating a more efficient and cohesive computing environment.