Backward Compatibility Testing is a technique to verify the behavior and compatibility of the developed hardware or software with their older versions of the hardware or software. Backward compatibility testing is much predictable as all the changes from the previous versions are known.
Forward Compatibility Testing is a process to verify the behavior and compatibility of the developed hardware or software with the newer versions of the hardware or software. Forward compatibility testing is a bit hard to predict as the changes that will be made in the newer versions are not known.
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