First in brief know what is Quality? Quality can be define in different manner. Quality definition may differ from person to person. But finally there should be some standards. So Quality can be defined as
* Degree of excellence – Oxford dictionary
* Fitness for purpose – Edward Deming
* Best for the customer’s use and selling price – Feigenbaum
* The totality of characteristics of an entity that bear on its ability to satisfy stated or implied needs – ISO
How a Product developer will define quality – The product which meets the customer requirements.
How Customer will define Quality – Required functionality is provided with user friendly manner.