Duo Microsoft Integration vs Rublon Multi-Factor Authentication: Side-by-Side Comparison (2026)

Duo Microsoft Integration: MFA integration for Microsoft services including Entra ID, Windows, and RDP. built by Duo Security. Core capabilities include Multi-factor authentication for Microsoft services, Integration with Microsoft Entra ID (Azure AD), Two-factor authentication for Windows logon and RDP..

Rublon Multi-Factor Authentication: Cloud-based MFA solution securing apps, VPNs, and servers for orgs. built by Rublon. Core capabilities include Mobile Push authentication via Rublon Authenticator app, TOTP (Mobile Passcode) authentication, FIDO2/FIDO Security Key support (USB, NFC, USB-C) and Passkeys..

Both serve the MFA & Passwordless market but differ in approach, feature depth, and target audience.

Duo Microsoft Integration differentiates with Multi-factor authentication for Microsoft services, Integration with Microsoft Entra ID (Azure AD), Two-factor authentication for Windows logon and RDP. Rublon Multi-Factor Authentication differentiates with Mobile Push authentication via Rublon Authenticator app, TOTP (Mobile Passcode) authentication, FIDO2/FIDO Security Key support (USB, NFC, USB-C) and Passkeys.

Duo Microsoft Integration is developed by Duo Security. Rublon Multi-Factor Authentication is developed by Rublon. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Duo Microsoft Integration and Rublon Multi-Factor Authentication serve similar MFA & Passwordless use cases: both are MFA & Passwordless tools, both cover MFA, Authentication, Active Directory. Review the feature comparison above to determine which fits your requirements.