Step 1: Create a Microsoft Partner Center account
If you are not already a member of the Microsoft Partner Center, you must become a member by enrolling at https://aka.ms/joinmarketplace.
You must be a member of Partner Center to publish apps on AppSource.
See also
Microsoft commercial marketplace
Create a commercial marketplace account in Partner Center
Feedback
https://aka.ms/ContentUserFeedback.
Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see:Submit and view feedback for