In an application like Zoom, downstream data will include the video and audio of all other participants in the meeting, while upstream data will be your own video and audio stream which is sent through the network to Zoom. Upstream is data that is uploaded from your device to the Internet. Downstream is data that is download from the internet to your device. Many internet plans have different 'downstream' and 'upstream' speeds.
With respect to home internet service, the bandwidth you pay for from your Internet Service Provider (ISP) is always a maximum, and not necessarily your actual obtained speed. 'Bandwidth' refers generally to the maximum rate at which data can be transferred over a network. Internet Speed (Bandwidth) Concerns for Zoom/Remote Work:
