Symptoms
"Enabling IIS Caching on Initial Load of a Forms" in Appit as per the following 4.6.11 KB article: http://help.k2.com/kb001759
Diagnoses
As per the Appit team, it will not be possible using this method as Appit uses AAD Authentication and not Windows integrated authentication. This means that a PowerShell script will not be able to load the forms in a browser to cache them as the browser session will not have the required permission to access the form.
Resolution
A new feature request was logged for the developers to investigate how to achieve this in Appit, possibly using a different method.