Code structure refers to the organization and arrangement of code within a program. It includes how different components, such as functions, classes, and modules, are organized to enhance readability and maintainability. A well-structured codebase allows developers to easily navigate and understand the logic behind the program. Good code structure often follows specific conventions and best practices, such as consistent naming conventions and indentation. This helps in identifying the purpose of different sections of code quickly. Tools like version control systems can also aid in managing code structure by tracking changes and facilitating collaboration among developers.