Hi Joris,
It is possible, but SAML logout endpoint that we use exists on the client side. During SSO setup, we can optionally include the SSO Logout URL from your side within our SSO Configuration. That way, when a user logs out of Govern, they are sent to your logout site. If you'd like to set this up, I'll have our Cloud team connect with you via a private ticket.
Thanks,
Cam