what is atm in networking

Asynchronous Transfer Mode (ATM) is a high-speed telecommunications standard used in networking, primarily for Wide Area Networks (WANs). It is a connection-oriented technology that transmits voice, video, and data traffic using fixed-size cells, typically 53 bytes long. This cell-switching approach ensures consistent performance and low latency, making it ideal for time-sensitive applications. ATM’s design incorporates Quality of Service (QoS) to prioritize different types of traffic for reliable transmission.