In the computer world, however, ATM has a different meaning. Asynchronous Transfer Mode is a networking technology that transfers data in packets or cells of a fixed size.
Asynchronous Transfer Mode (ATM), sometimes called cell relay, is a widely deployed, high-speed, connection-oriented backbone technology that is easily integrated with technologies such as SDH, Frame Relay, and DSL.
ATM is more efficient than synchronous technologies such as time-division multiplexing (TDM), in which each user is assigned a particular time slot which no other station can use. Because ATM is asynchronous, time slots are available on demand.
ATM was originally designed in the mid-1980s for use in public networks but has also been deployed as the backbone technology for private networks.
ATM equipment can transmit large amounts of data over a single connection while ensuring that no single transmission takes up all the bandwidth. It also allows Internet Service Providers (ISPs) to assign limited bandwidth to each customer.
While this may seem like a downside for the client, it improves the efficiency of the ISP’s Internet connection, causing the overall speed of the connection to be faster for everybody.
You can learn more about ATM here.