The Direct login feature allows you to add a link to a website that directly opens the VDV web interface without asking for an username and password. This a a good option to give easy access to the web interface.
Using the Direct Login feature you can skip the login page and give others a direct link to your data in VDV.
Those who are running VDV on their own servers can configure Direct Login in db.web.browser under configure choosing Access Control then choosing Direct Login.
Go to db.web.browser -> Configure -> Access Control -> Direct login
Those who are using the Cloud Hosting Service can contact firstname.lastname@example.org and ask for a Direct Login link.