What is Multicast routing?

Multicast routing is a network addressing method for the one-to-many transmission of information. It enables a source to send data to a specific group of subscribers simultaneously, rather than sending individual copies to each recipient. This is more efficient than unicast (one-to-one) or broadcast (one-to-all) when only a subset of network devices needs to receive the data. It's commonly used for applications like video streaming, online gaming, and distributing financial data, where the same content needs to be delivered to multiple recipients.