Bandwidth as a data transfer capacity and a period of time. So this is how much data we could potentially sign out of our network interface cards been left as measured in bits per second with different data rate units like kilobits per second megabits per second gigabits per second and terabits per second.
Throughput is the actual data transfer rate in a period of time. Bandwidth and throughput can be easily confused.
But just remember that bandwidth is how much data you could potentially send in a period of time but throughput is the actual data that’s been transferred in a period of time.