Backward compatibility refers to a software's ability to work with what?

Backward compatibility describes a software's capability to operate seamlessly with earlier versions of the same software. This means that when a new version of a software application is released, it retains the ability to run features, files, or components that were created with or are part of the previous versions. This is crucial for users who upgrade to the latest software but still need to access or utilize older files or functions without facing issues such as loss of data or functionality.

When software is backward compatible, it reduces the friction for users transitioning to new versions, ensuring a smoother experience and preserving their investment in older technology or documents. This characteristic is especially important in environments where continuous updates are common, as it allows for a seamless integration of new features while maintaining support for legacy systems and data.