Code maintainability refers to the ease with which a software system can be modified or updated over time. It encompasses various aspects of code quality that impact how easily developers can understand, debug, and enhance the codebase. Maintaining code involves tasks such as fixing bugs, adding new features, and optimizing performance, all of which are made simpler with maintainable code.

Maintainable code is typically well-organized, with clear and consistent naming conventions, proper documentation, and modular design. By following best practices and design patterns, developers can write code that is easier to test, reuse, and extend. This not only improves the efficiency of the development process but also reduces the likelihood of introducing new bugs or issues when making changes to the code.

In essence, code maintainability is crucial for the long-term success of a software project. It enables teams to adapt to evolving requirements, scale the application, and collaborate effectively. By prioritizing maintainability in the development process, organizations can reduce technical debt, improve developer productivity, and ensure the longevity and sustainability of their software systems.