Basic Authentication
Uses a plain text user name and password with the JRNI Login API call. Basic Authentication can be used for both the Member and Admin APIs.
Single Sign On
Allows you to grant access via your internal idP to grant access to the JRNI Admin or Member APIs.
OAuth
Allows you to configure a system to system integration login as either Owner or Admin permission rights to the Admin API. JRNI role types are covered here.