We recently finished one of the biggest refactoring tasks we have ever done on elmah.io: migrating everything to .NET Core. elmah.io currently consists of 5 web apps and 57 Azure Functions spread across roughly 25 Function apps. In this post, I'll share some of the lessons learned we have had while solving this task.

Each technology becomes obsolete after some time. It is no different with the .NET Framework – it can be safely said that after the appearance of the .NET Core platform, the old Framework is slowly disappearing. Few people write about this platform, at conferences it has not been heard for a long time in this topic. Nobody starts a project in this technology. Only the .NET Core everywhere… except for a beloved legacy systems!

A Step-by-Step Guide to Migrating a Project from ASP.NET MVC to ASP.NET Core

This article explains how to update an existing ASP.NET Core 2.2 project to ASP.NET Core 3.0.