C# MVC ADFS Authentication - c#

I have a C# MVC application which requires ADFS authentication. ADFS was not considered at the initial stage of the development until completion of the application. Any ideas on how to make the application aware of ADFS? I have configured ADFS with the right claims, the challenge is making the application aware. Any idea is appreciated. I am using ADFS 2.0. It is On-Premise ADFS

Making the application "ADFS aware" requires that the application uses one of the supported protocols i.e. WS-Fed, SAML or OpenID Connect.
Adding WIF (WS-Fed) is a good option.

Building My First Claims-Aware ASP.NET Web Application
Deploying Active Directory Federation Services in Azure
Use the On-Premises Organizational Authentication Option (ADFS) With ASP.NET
in Visual Studio 2013
Using ADFS with Azure for Single Sign-On
in ASP.NET MVC

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Making an application claims-aware implies adding support for one of:
WS-Federation
SAML 2.0
OpenID Connect / OAuth
This then enables the application to talk to an IDP for SSO e.g. ADFS, Azure AD, identityserver, Auth0.
In the Microsoft world, web apps use the OWIN NuGet packages for WS-Fed (WIF) or OIDC. For SAML, look here.
Desktop apps use ADAL or the later version MSAL.
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asp.net MVC authentication with Shibboleth
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Thanks!
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