Isolation: Submodules provide a way to isolate the code of a component or library within its own repository. This allows for independent versioning and development of the submodule.

Version Control: Submodules track a specific commit of the submodule repository, ensuring that each project uses a consistent version of the submodule. This can help avoid unexpected changes and ensure compatibility.

Clarity: Submodules explicitly declare their dependencies, making it clear which external components are used by a project.

Collaboration: Submodules facilitate collaboration when multiple projects rely on the same codebase. Changes made to the submodule can be easily propagated to all dependent projects.