Submodules
Submodules are a Git feature that allows you to include and manage external repositories as subdirectories within a main Git repository. They enable you to keep a project's dependencies or components in separate repositories while maintaining version control and tracking changes across them. This is useful for modular development, where different parts of a project are developed independently but need to be integrated.
Developers should use submodules when working on large, modular projects that require integrating external codebases or libraries while preserving their independent version histories. Common use cases include managing third-party dependencies, separating core and plugin components, or collaborating on multi-repository projects where changes need to be synchronized. It helps avoid code duplication and ensures consistency across different parts of a system.