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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...

Learn API versioning in ASP.NET Core with practical C# examples. Compare URL, header & query strategies, avoid pitfalls, and version your APIs the right way today. If you've ever shipped a public or internal REST API, you already know the hard truth: change is inevitable, but breaking your clients is optional . API versioning in ASP.NET Core is the discipline that lets you evolve endpoints, rename fields, and change response shapes without forcing every consumer to update on your timeline. In this complete guide, you'll learn the four main ASP.NET Core API versioning strategies, see runnable C# code for each, and discover the best practices and pitfalls that separate junior implementations from production-grade APIs. Whether you're a beginner searching for how to version a REST API in C# , an intermediate developer hunting for best practices, or a senior engineer designing an enterprise API governance model, this tutorial has you covered. Let's dive in. Wh...