Web usability is the most important aspect of the today’s online business process. Usability of the web site demonstrates how the web site is easy to use, perform the tasks and clear to understand for the users.
For example the visitors of the web-shop should easily find the products they want to buy, otherwise they’ll just leave. If they get lost in the web site because of the navigation structure they also leave your web site and may be never come back again.
Mostly the usability of the site is identified by visitors. They use to remember a web site where the surfing experience was a great and easy. Simple and easy user interface with a clear navigation can in general improve usability of the web site.