Multicast Communication is a method of data transmission where information is sent from one source to multiple destinations simultaneously. Unlike unicast, which sends data to a single recipient, or broadcast, which sends data to all devices in a network, multicast targets a specific group of devices. This makes it efficient for applications like video conferencing and online streaming, where the same content is delivered to many users at once. In multicast communication, data packets are sent to a special multicast address, allowing only devices that have joined the multicast group to receive the information. This reduces network congestion and optimizes bandwidth usage, making it a preferred choice for distributing large amounts of data to multiple users without overwhelming the network.