Quality of the software product

Quality of the product can be consider from the customers' view point and the developers' view point.

customers' view point                           Developers' view point
            ↓                                                                 ↓
*Fitness of usage                                    *Built product meets all the business and technical                                                                                       requirements.


When the software system meets all the specified customer requirements(functional and nonfunctional), that product can be called as quality software product. Quality is defined by two factors called validation and verification.