Single Sign On is a security feature that enables customers to log in once, externally, and be able to access multiple applications. The protocol used for this is SAML, an XML-based open standard. It uses cryptography and digital signatures to pass a secure sign-in token from the identity provider to the application - in this case PressPage.
We currently offer SAML-based Single Sign On via three identity providers: Azure, Okta and OneLogin.
To have this feature enabled and set up for your account, please contact Support. If your identity provider is not listed, please contact Support as well to have us look into the possibilities.