What is Duo Security?
Cisco describes Duo as an identity and access layer with MFA, SSO and device-trust options. Duo's own documentation explains trusted-endpoint policies. What can be enforced depends on the integration, device management and product plan.
Read the full overview
Sources checked 27 September 2026: Cisco Duo overview, Trusted Endpoints.
Key capabilities
- MFA: Require a second factor on supported application logins.
- Device trust: Use supported endpoint checks when the policy calls for them.
- Access administration: Set and review policies for different user groups.
Authentication, application access and device posture are related but separately configured controls.
Start with the applications and users that need stronger login. Pilot the actual sign-in path, enrollment and recovery process before extending a policy across the organization.
The hard case is a legitimate user with a lost device; the recovery path should preserve security without blocking essential work.
Technical details
- Access
- Web platform
- Source model
- Other license
- Founded
- 2010
- Headquarters
- Ann Arbor, Michigan, USA
- Pricing model
- Freemium
- Starting price
- 10 USD · verify current price ↗
- API
- Available
- Website
- duo.com ↗
Official resources
What to verify for your environment
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms with the publisher.
- Validate deployment, data location, access control, backup and recovery requirements.
- Test integrations, export paths and a representative operational workflow before committing.
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