Video conferencing, plus Zoom AI Companion (summaries, recaps, action items). Still the default for external meetings even with Teams/Meet competition.
From Wikipedia
Zoom Workplace is a proprietary videotelephony software program developed by Zoom Communications. The free plan allows up to 100 concurrent participants, with a 40-minute time restriction. Users have the option to upgrade by subscribing to a paid plan, the highest of which supports up to 1,000 concurrent participants for meetings lasting up to 30 hours.