The app appears to be available on any Zoom desktop client, presumably including free versions. That could also make it useful for family gatherings, small business meetings and other situations where you might need to keep distractions to a minimum (or provide space for people less comfortable with showing their face on camera). If you want to make the setting mandatory for all users in your account, you can lock it.

The feature arrives as the new school year approaches with the threat of COVID-19 and particularly the Delta version potentially keeping students out of schools. On top of the Focus mode, Zoom also detailed some back-to-school tips to make distance learning work better, with suggestions like checking your internet connection, creating a learning space, and learning about lighting and other app features.