Identity is in crisis. Duo is the cure.
Duo flips the script on identity with security-first IAM that attackers hate and users love.

One of the world’s most trusted identity security tools
From start-ups to large enterprises, companies of all sizes depend on Cisco Duo to prevent unauthorized access.

Monthly User Authentications

Customers Globally

Return on Investment*
* The Total Economic Impact™ of Cisco Duo, a commissioned study conducted by Forrester Consulting, February 2023. Results are based on a composite organization.
Because the last thing your business needs is an identity crisis
Our cloud-based identity security solutions help companies play it safe.
Security at the core, not an add-on
Everything you need in one place – Duo’s security-first approach to identity can be implemented as a full IAM infrastructure or side-by-side to secure and orchestrate what you already have.


No phishing. No friction. No gaps.
With identity behind 60% of breaches, security can't be an afterthought. With phishing-resistant MFA, passwordless and identity intelligence, Duo protects all steps of authentication from login to enrollment, fallback and helpdesk access - without extra hardware or added complexity.
See more. Stop more. Stay safe.
Know who’s logging in, what’s risky, and what to do next. Duo Identity Intelligence gives you the power to act before threats become problems.


First Login. Only login.
Duo turns strong security into a smooth, seamless experience. One login gets users where they need to go with no friction, no fatigue and no slowdown.
Built to fit your business
Get 30 days free. Choose a plan, pay easily with a credit card, and get activated in minutes.
Duo Free
Add up to 10 users at no cost, and get:
Strong MFA
Seamless integrations
Free authenticator app
Duo Essentials
Includes everything in Duo Free, plus:
Duo Directory
Phishing-resistant MFA
Complete passwordless authentication
Single Sign-On
Trusted Endpoints
Unlimited applications
Duo Advantage
Includes everything in Duo Essentials, plus:
Cisco Identity Intelligence (Cross-identity visibility, ISPM, and ITDR)
Duo Passport
Session theft protection
Device Health checks
Risk-Based Authentication
Duo Premier
Includes everything in Duo Advantage, plus:
A comprehensive package for complete Zero Trust access
VPN-less remote access to private resources
Complete device trust with endpoint protection check
Here's what Duo's devotees are saying

Mark Rodrigue
Senior Network Engineer,
Room & Board
"Our rollout was surprisingly quick,” exclaims Mark Rodrigue, Senior Network Engineer at Room & Board. "The Duo rollout took maybe four weeks from start to finish. All the training and onboarding material was right there. We just downloaded it, added our banner, and sent it to our users."

Mike Johnson
former CISO,
Lyft
"One of those rare solutions that both improves the security of our company while simultaneously being easier for our employees to use.”

Christopher Martin
Manager of Identity and Access Security, AmeriGas
"When we roll a technology out to users, we want to enable as much self-service as possible – not generate more help desk calls. This actually enables users – for example, they get a new phone and can easily get it enrolled."