A Unicast Address is a unique identifier assigned to a single network interface in a computer network. It allows data packets to be sent from one specific source to one specific destination. This type of addressing is commonly used in the Internet Protocol (IP) to ensure that messages reach the intended recipient without interference from other devices. In contrast to other addressing methods like Broadcast or Multicast, which send data to multiple recipients, unicast addresses focus on one-to-one communication. This makes unicast addressing essential for applications such as web browsing and email, where information needs to be directed to a specific user or device.