For customers using ADFS authentication (see this article) we can offer a special URL that combines this authentication with Deep Links (explained here). The advantages to this are many, e.g. you may add a link directly to a specific invoice directly from an ERP system (previously referred to as direct lookup), while leaving the authentication to the ADFS server.
To use this simply add a query parameter named "dest" to your ADFS url, containing the relative path from the Deep Link url.
For example, if your ADFS url is:
you could use the following URL to go directly to an invoice from your ERP system:
The parameters and format of the deep link (ID_TYPE, ID etc) are explained in the Deep Links article.