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Learn API versioning in ASP.NET Core with practical examples. Master URL, header & query string strategies plus best practices. Start building versioned APIs now! API versioning in ASP.NET Core is one of those topics every backend developer eventually runs into — usually the moment a mobile app, a third-party partner, or another team starts depending on an endpoint you need to change. Once an API is public, you cannot simply rename a field or remove a property without breaking someone. That is exactly the problem versioning solves. In this complete guide, you will learn the main API versioning strategies, how to implement each one with the official Asp.Versioning libraries, and the best practices that keep your Web API maintainable for years. Whether you are a beginner searching for "how to version an API", an intermediate developer comparing best practices, or a senior architect weighing advanced trade-offs, this tutorial walks through runnable C# examples and ex...

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...