The webinar discussed the features and configurations of Duo single sign-on (SSO) and emphasized the importance of strong authentication for security. Sheila demonstrated the configuration of a security key and SAML IDP integration in Duo, while Felipe highlighted the vast catalog of Duo SSO integrations, including SAML, OIDC, and OAuth 2.0. Duo SSO offers features like Duo Central for managing applications and multiple IDP support for flexibility. The Duo Central Portal can be customized with an organization's branding, and troubleshooting can be done using Cisco's reporting capabilities and integration tools.