Not sure how to handle this. Our current app (.Net MVC) is accessed via companyname.appname.com, authentication is handled via forms (cookie) authentication. Within the app there is a global search box that is quite heavily used, we are looking to split this out into it's own microservice so all calls for search will go to something like search.appname.com instead, therefore lightening the load on the main app. The question we have is about how best to authenticate the calls to that url. We c...