overlay network topology

An overlay network topology is a set of virtual connections built on top of an existing physical network. Imagine creating a new network layer over the current internet, where nodes (like computers or servers) are connected through virtual links that are independent of the physical hardware. These virtual connections can be optimized for specific tasks, such as faster data transfer or better security, without altering the physical network. Essentially, overlay networks enable flexible, customized communication paths that improve performance or security while leveraging the underlying physical infrastructure.