Download: The time it takes to pull data, measured in megabits per second (Mbps).
Upload: The time it takes to send data, measured in megabits per second (Mbps).
Ping: The time it takes between sending a request and receiving a response, measured in milliseconds (ms) and also referred to as Latency.
These are the primary three measures upon which your speed is tested. Your Download speed is ideally, and typically, the fastest because the majority of our online activities require we pull data from the internet. Upload speeds are important for interactive video calls and sending files to sites and services on the internet. Your ping speed dictates the quality of your voice and video calls, as well as your ability to play online games.