The procedure of logging out will be explained in the following article.

1 How to log out

The button for logging out is located in the same ribbon as the My account and Language buttons. 

After clicking the head icon (1) located in the upper right corner, users can log out by clicking the logout button (2). Users will not be asked to confirm the action, so it will become effective immediately.

In this example, the web app start page is used. The same procedure applies to all of the individual web apps.