From Legacy to Modern: Migrating WCF to Web API with the Help of AI

The modernization of legacy applications has always been a costly process: understanding old code, uncovering hidden dependencies, translating communication models (for example, from SOAP to REST), and ensuring that nothing breaks in production. This is where artificial intelligence changes the game.

AI does not replace the architect or the developer, but it speeds up the heaviest steps in a migration: it helps read and summarize large codebases, proposes equivalent designs in the new technology, generates drafts of controllers, DTOs, and tests, and even suggests architectural improvements that take advantage of the change. Instead of spending hours on mechanical tasks, the team can focus on what really matters: the business rules and the quality of the new solution.

In this post, we’ll look at that impact applied to a concrete case: migrating a WCF service written in C# to an ASP.NET Core Web API, using a real public repository ...