Extreme Programming (XP) is an Agile software development methodology that emphasizes customer satisfaction, flexibility, and continuous improvement. XP promotes frequent releases in short development cycles, allowing teams to quickly adapt to changing customer requirements. Core practices of XP include pair programming, where two developers work together at a single workstation; test-driven development (TDD), where tests are written before the code itself; and continuous integration, where code is integrated and tested frequently to catch issues early.

XP also places a strong emphasis on close collaboration with the customer, who is considered a key member of the development team. This collaboration ensures that the software being developed aligns closely with the customer’s needs and expectations. XP encourages simplicity in design, frequent feedback, and constant refactoring to improve the codebase. By focusing on delivering the highest value features first and maintaining a high level of code quality, XP aims to produce software that is both reliable and responsive to change, making it a popular choice for projects that require rapid development in dynamic environments.