Make sure your computer's operating system and your conferencing platform of choice are running the latest version available.
Close all unnecessary applications running in the background to minimize computer resources and potential disruption of performance.
Internet
Having a wired ethernet connection is preferred. This will minimize connectivity, video and audio disruption.
If you're using a wireless connection, make sure you are close to your router and ensure others in your household are not streaming videos during your call. This will minimize bandwidth consumption.
Environment
Be in a space, such as an office, with little chance for interruptions from people, pets or any other internal and external building noises.
Presenting in smaller rooms will improve both sound and microphone quality. Avoid rooms with high ceilings, such as cathedral.
Setup your room to look professional. Removing any personal items, images or documents you do not want others to see.
Virtual backgrounds, if used, should look professional.
Lighting
Make sure to close window blinds in your meeting space.
Avoid having windows directly behind where you are presenting.
Have a shaded lamp behind your camera to improve facial lighting.
Sharing, Recording and Security
If sharing content, ensure you are only sharing what you intend for others to see and not your entire desktop, emails or other personal information.
If you are hosting the event and wish to record, remember to do so or schedule automatic recording.
Remember to stop sharing and recording when you are done.
Other
Test your audio, microphone and speakers in advance.
Know your microphone, camera and speaker device names and settings.
Test your conference software with a friend or relative.
Be prepared if your audio, video or internet fails to meet performance needs. Knowing your phone dial-in options is a good back-up.