What is multi-cast address and why is it used?

A multicast address is a specific type of IP address used to send data to multiple recipients simultaneously within a network. Unlike unicast addresses, which target a single destination, multicast addresses allow efficient one-to-many communication, minimizing network traffic and resource consumption. They are commonly used in applications like video streaming, online gaming, and real-time data distribution, where the same content needs to be delivered to multiple users at once. This approach enhances performance and reduces the load on both the sender and the network infrastructure.