I have written a VBA macro for Microsoft PowerPoint (including a custom ribbon tab) and saved it as .ppam file.
Is it possible to submit the .ppam file to Microsoft AppSource?
I have read that an Office add-in consists of two parts: the manifest (an XML file) and the web app but I am asking if these files are maybe already included in or generated from the .ppam so that it could also be used for submission.
VBA add-ins and what MS calls Apps are two different things. As far as I know, MS doesn't accept VBA (ie, PPAM) add-ins for the app store.