Inter-Process Communication (IPC) is the exchange of data between two or more independent processes in a computer system. IPC allows processes to work in tandem with each other, sharing resources and communicating with each other to accomplish a larger task. IPC is a specialized skill that requires knowledge of operating system concepts, programming languages, and networking protocols. Common methods of IPC include message passing, shared memory, and sockets. Understanding IPC is essential for developing complex and distributed systems.