P4 Language

P4 is a programming language designed to define how network devices, like switches and routers, handle data packets. It allows engineers to specify custom behaviors directly in the device’s data plane—where the actual data moves—rather than just configuring settings. This enables greater flexibility because network developers can tailor how packets are processed, routed, or modified, facilitating innovative networking solutions. P4's high-level syntax makes it easier to create and implement new protocols or modify existing ones without needing to change the hardware itself, making networks more adaptable and programmable.