Starling Cloud Platform has a built-in security feature where it can auto-detect an Azure AD tenant based on the email address. Instead of creating a new account and storing a password on the Starling Cloud Platform it redirects the login attempt to your corporate Azure tenant.
This will use built-in federation to leverage Azure as an authenticator. Afterwards, you will be redirected back to the Starling Cloud platform once login is complete.
The process should be seamless, if you have any issues with login please see you Azure administrator.
If the Azure Identity Provider is not required, an email address that is not associated with an Azure subscription can be utilized for logon purposes.