Do you know what backward compatibility is and when it needs to be checked?

Backward compatibility is the ability of a new software version to correctly work with data, interfaces, or components created for previous versions. It is important so that users can update without losing functionality or needing to change existing integrations.

Backward compatibility should be checked in the following cases:

• When releasing new API versions, to ensure old clients continue to work.
• When updating libraries or components used in other systems.
• When migrating data, to ensure new software versions correctly handle old formats.

Backward compatibility tests help prevent failures and data loss for end users.