Software Rot

Software Rot known as software erosion, code rot, software entropy, bit rot or software decay. It refers to the slow degradation in the performance of computer software. It is a misnomer, because the software is not actually decaying; it just isn’t being updated properly, which makes it run slower and seem as if it’s faltering. Software rot is classified as either active or inactive, depending on the software’s usage. It can deteriorate in “performance” over time and become what is commonly called “legacy” as it runs and accumulates errors; this is not generally considered software rot, though it may have some of the same consequences.