Checkout
Count your computers, pick monthly or annual, and continue to checkout. The card is handled by Stripe; we never see the number.
After you pay
Within a minute you get one download link per computer. Each link carries its own key, so nothing to copy or type.
Double-click, click Yes when Windows asks. It installs the security team's agent and sets up Microsoft Defender on its own.
About four minutes later the shield in the tray turns blue. Your status page shows every computer, its state, and when it last checked in.