A multicast address allows a source device to send a message to a specific group of devices, which is efficient for streaming media and group communications.
A multicast address allows a source device to send a message to a specific group of devices on a network. Unlike unicast which targets a single recipient, and broadcast which targets all devices on the local network, multicast communications are directed to multiple devices that have joined a specific multicast group. This is particularly useful for streaming media and other applications where the same data needs to be delivered to multiple recipients simultaneously, reducing the overall bandwidth requirements compared to unicast transmission.
So, multicast addresses are efficient for scenarios where the same data needs to be sent to multiple recipients, making them ideal for group communications and streaming services.