from the dictionary:<p>=====<p>the standard of something as measured against other things of a similar kind; the degree of excellence of something: an improvement in product quality | the hospital ranks in the top tier in quality of care.<p>general excellence of standard or level: a masterpiece for connoisseurs of quality | [ as modifier ] : a wide choice of quality beers.<p>=====<p>Seems pretty simple applied to software.  Intuitively does what it says it does in a bug free manner.<p>If you want to get into a discussion that parallels why people call modern art great and there can be no standards for what is art, then I&#x27;m really not interested.  I don&#x27;t believe a white canvas is art, and I believe software and art can have objective standards.