Latency is a measure of delay. In a network, latency measures the time it takes for the data to travel across the network and get to its destination. It is usually measured as a round trip delay; the time it takes for the information to get to its destination point and and back to its point of origin. Over the Internet, individual delays at the application or packet level can accumulate as each element in the chain of communication is linked to others. Latency is usually measured in milliseconds (ms). The differences that latency-sensitive software design make can be dramatic with start times that are four times as fast, and load times twice as fast We can also notice better resilience due to fewer intermittent failures.