This article provides step-by-step instructions on how to call the SharePoint Online API through a Console App using Azure AD App-Only permissions with certificate authentication. The steps include registering an Azure AD app, providing appropriate SharePoint API permissions, generating and uploading a self-signed certificate, and using the PnP.Framework NuGet package in the console app. The article also mentions that using SharePoint app-only is not recommended by Microsoft and provides additional details on the process.
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