In recent months, our product (which went live probably 9 months ago) experience an increase in the number of users using it. We faced lots of queries, problems, and complaints from users. Sadly, it ...
I define defect as : "something within the application design or code which prevents it functioning as per requirements." I'm looking for ideas about the causes of defects, eg the human factor, ...
If possible write how to avoid this kind of bug (besides testing, of course, please write a specific technique)
In fact this question is about cautions to be taken to enhance quality user experience and reduce avoidable support calls.