Refactoring is the process of restructuring existing code without changing its external behavior, with the aim of improving its internal structure and maintainability. This cluster teaches learners how to identify code that needs refactoring and apply best practices to improve code quality and performance. By mastering refactoring, professionals can extend the life of software projects, reduce technical debt, and enhance the overall maintainability of codebases.

This cluster is ideal for software developers, engineers, and technical leads. Practical outcomes include improved code maintainability, reduced complexity, and better performance.

Learners will explore techniques such as code smells detection, design pattern implementation, and automated refactoring tools. Tools like refactoring editors, code analysis tools, and version control systems will be covered to help learners apply refactoring practices effectively in their development workflows.