Hi Maciej Skiba,
As far as I see it WebCEO's Hitlens service
expects physical files when you make some modifications. Sitefinity pages are dynamic and you will not be able to use some of the features as FTP. I believe that there would not be a problem for the CEO Analysis.
Sitefinity supports external pages, so you can migrate your old pages to the project and keep using WebCEO's Hitlens service
in the same way. The external pages could not be edited in Sitefinity's Page Editor - Drag/Drop controls, set Themes etc.
the Telerik team
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