Disclosed are various approaches for workflow service back end integration. In some examples, a data request is received. The request is associated with a network service. A single sign-on (SSO) token is received. The SSO token represents a user account authenticated with an identity manager. Authentication data for the network service is identified based on the SSO token. The authentication data can specify an authentication site of the network service. A navigation action is automatically performed on the authentication site. The requested data is received. A command to present on a client device the data is transmitted to the client device.