Migrate your Web Apps to ASP.NET Core, one page at a time
summary
Shows how to replace pages one at a time by putting an ASP.NET Core app with YARP (Microsoft Reverse Proxy) in front of an existing ASP.NET WebForms or MVC site, proxying unknown requests to the old app while serving matched paths with new Razor pages or MVC. Covers session sharing (HTTP handlers + session API), cross‑app authentication (serialize ClaimsPrincipal, custom auth handler), using MessagePack serialization, a response transformer for absolute redirects, and the strangler fig pattern for incremental migration. YARP preview supports .NET Core 3.1 and .NET 5.
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chapters (5)
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