CSharp-Coder

Learn API versioning in ASP.NET Core with practical C# examples. Master URL, header & query string strategies. Start versioning your APIs the right way today. API versioning in ASP.NET Core is one of those topics every backend developer eventually runs into — usually the hard way, right after a "small change" breaks a mobile app in production. If you build REST APIs with C# and .NET, learning how to version your endpoints properly is not optional; it is the difference between shipping confidently and dreading every deployment. In this complete guide, we'll cover the main API versioning strategies in ASP.NET Core, show runnable code examples for both controller-based and minimal APIs, and explain the why behind each decision so you can pick the right approach for your project. Why API Versioning in ASP.NET Core Matters An API is a contract. The moment a client — a web app, a mobile app, or a third-party integration — starts consuming your endpoints, you ha...