Deep integration. Cons: Management hell. You have to set up 2FA 15 different ways.

What Is Two-Factor Authentication (2FA)? | Microsoft Security

. If your 2FA device breaks and you haven't backed up your seeds, you may lose access to your entire lab. Local Bypass: Consider exempting local IP ranges (e.g., 192.168.1.0/24

Free, widely supported by most self-hosted applications.