I have converted my existing ASP.NET web application as a "Provider hosted app" as per the MSFT documentation and installed on my Sharepoint 2013 site. The moment I navigate from Sharepoint site to Provider host Web application, I am getting the windows login prompt for credentials. Why so?
I was under an impression like if we have a logged-in on sharepoint site and while we navigate to our "provider hosted app", the access details will get passed over. While checking solutions over internet, it is mentioned we need to add the provider-hosted-app url into intranet zone, but mine is public facing site. How to achieve "single sign on" from Sharepoint site to app ?