Tried both for 3 months each video standups: 30 minutes daily, everyone half paying attention async standups: 5 minutes to write, 5 minutes to read when convenient async resulted in: * 45 hours saved per person per quarter * better updates (people think before writing) * searchable history (can look back) * no timezone conflicts only downside: less "face time" but we do a weekly video call for actual discussion. don't need daily