i recently developed an Angular App for my company. Due to some non-technician decisions it was implemented with a C# backend which was placed inside SharePoint 2013 as a Provider Hosted App.
Now they like to have an App with similar functions as the Angular web-app.
In the development of the web-app i faced different problems with integrating the Provider Hosted App into SharePoint.
Now i cant access any of the C# backend functions with my Ionic App because of authentication within SharePoint.
Has someone already done something like this?