Azure Security Center and Qualys

markus_pitkaranta, the recommendation you've clicked ("Vulnerability assessment solution should be installed on your virtual machines") predates the Ignite announcement. It's the ASC recommendation to setup a vulnerability assessment solution on your VMs.

The Qualys powered extension announced at Ignite is deployed through a new recommendation as described in the new documentation page Integrated vulnerability scanner for virtual machines (Standard tier only).

Incidentally, the relevant recommendation "Enable the built-in vulnerability assessment solution on virtual machines (powered by Qualys)".

Note that the new recommendation is being rolled out gradually so it may not appear in your subscription yet.

I hope this helps.