Single Sign-On (SSO) allows users to use Avendoo without entering a username and password. Authentication takes place once in a central location, for example, when logging in to the workplace. When Avendoo is accessed, the login is automatically adopted, so that the login page is no longer required.

SSO is based on a check by an Identity Provider (IDP) and enables access to Avendoo if the user is already logged in globally, such as in a Windows domain. An example of an IDP is Active Directory Federation Services (ADFS).