formsauthenticationticket

I have two bounded contexts : ASP.NET 4.0 MVC/WebForms Application OWIN Self-Hosted w/ ASP.NET Web API 2 The former is an existing well-established product, however, its lack of architecture (SmartUI) has led to an difficult-to-maintain codebase with concerns of extensibility and scalability now more glaringly visible. We are iteratively addressing this issue by introducing a new backend application - exposable via OWIN/WebAPI services. Currently we're only looking to leverage cookie authentication in the new application. Originally, I thought it would be a breeze to use existing cookie auth