Internet performance refers to how well the internet functions in terms of speed, reliability, and responsiveness. It is often measured by metrics such as bandwidth, which indicates the amount of data that can be transmitted in a given time, and latency, which measures the delay before a transfer of data begins. High performance means faster loading times for websites and smoother streaming of videos. Factors affecting internet performance include the quality of network infrastructure, the distance between users and servers, and the number of users sharing the same connection. Regular testing can help identify issues and improve overall user experience.