Common issues when working with SharePoint Framework API permissions
There are a number of things you need to watch out for when connecting to APIs secured with Azure AD from SharePoint Framework solutions.
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A collection of 3 posts
Easily grant API permissions using the Office 365 CLI
Granting API permissions without SharePoint Framework packages just got easier with the Office 365 CLI.
Get Azure AD app-only access token using certificate on .NET Core
Building daemon applications that communicate with SharePoint Online? Here is how you can get an Azure AD app-only access token in .NET Core.