When possible, use a wired network connection, rather than a Wi-Fi connection. This will generally provide a more consistent and better quality network connection.
During the web conference...
When part of your session is taking place in a conference room, lecture hall, auditorium, or other large space, the space itself needs consideration to ensure the best possible audio.
The most important step to ensure your web conferencing session has the best audio experience it can is to test in advance. If you encounter an issue while testing, identifying the problem ahead of time will provide you with an opportunity to address and resolve it before the actual session.