Latency is the time delay between when a data packet is sent and when it is received, usually measured in milliseconds (ms).

Elaboration:

• Lower latency is better for real-time applications like online gaming and video conferencing.
• Influenced by network congestion, distance, and processing delays.
• Types include network latency, propagation delay, and queuing delay.

Example:

A video call with high latency (above 100ms) leads to noticeable lag between speech and response.