sso
Single sign-on solution for securing internal services
sso — lovingly known as the S.S. Octopus or octoboi — is the authentication and authorization system BuzzFeed developed to provide a secure, single sign-on experience for access to the many internal web apps used by our employees. It depends on Google as its authoritative OAuth2 provider and authenticates users against a specific email domain. Further authorization based on Google Group membership can be required on a per-upstream basis. The main idea behind sso is a "double OAuth2" flow, where...