overlay networking

Overlay networking is a method of creating a virtual network on top of an existing physical network. It allows different devices to communicate as if they are directly connected, even if they are not on the same physical infrastructure. Think of an overlay network like a layer of paths built above a city’s road system, enabling shortcuts and efficient routes without altering the underlying streets. This approach is often used in cloud computing and data centers to enhance security, scalability, and flexibility, allowing various applications and services to run seamlessly across multiple locations.