Eduardo Guerra is a Researcher at the Free University of Bozen-Bolzano, Italy. The focus of Eduardo Guerra’s research can be defined as “find better ways to develop software”, which includes patterns, programming approaches, and processes to be used by the development team. He considers the principles of Agile Software Development the core guidance of his research since they aim to improve software quality, optimize development time, and increase software adaptability. Test-driven development (TDD) was the core of several works that focused on test code refactoring, application of TDD for specific kinds of software, and teaching and evaluating the technique. Also, in the scope of programming techniques, metadata, and code annotations were the focus of several works that aimed to study them as an alternative to make the software more adaptable and improve the code quality.