Identify usability errors in the system early in development cycle and can save a product from failure. also suggest for the below common usability issues and report: Is the system is easy to learn? Is the system useful and adds value to the target audience? Is Content, Color, Icons, Images used are aesthetically pleasing ? Where do I click next? Which page needs to be navigated? Which Icon or Jargon represents what? Error messages are not consistent or effectively displayed Session time not sufficient.