Methods and systems for authentication using multiple identity providers are described herein. A first identity provider may receive, e.g., from a second identity provider, an indication of an authentication request. The first identity provider may retrieve, from a storage device, session information associated with the request. The first identity provider may authenticate, using one or more first functions, based on the session information, and based on authentication credentials received from a user, the user. Based on the authentication, the first identity provider may modify the session information. The second identity provider may authenticate, based on the session information and using one or more second functions, the user. The one or more second functions may comprise providing the user a token based on the session information. The session information may be subsequently deleted.