What is software quality?

Quality software is reasonably bug-free,delivered on time and within budget,meets requirements and/or expectations,and is maintainable.However,quality is obviously a subjective term.It will depend on who the customer is and their overall influence in the scheme of things.A wide-angle view of the customers of a software development project might include end-users,customer acceptance testers,customer contract officers,customer management,future software maintenance engineers,stockholders,magazine columnists,etc.Each type of a customer will have their own slant on 'quality' - the accounting department might define quality in terms of profits while an end-user might define quality as user-friendly and bug-free.