In the network economy, the website becomes a company's primary interface to the customer. Indeed, for e-commerce companies the site is the company. The user interface becomes the marketing materials, store front, store interior, sales staff, and post-sales support all rolled into one. In many cases the site even becomes the product itself. Usability and Accessibility A site's usability refers to how easily users can navigate a site to accomplish their tasks.
Accessibility is a piece of the site's usability.
The following tips are intended to serve as a starting point. When looking at usability, work from the reader's perspective. Also include common elements on the pages so users, without effort, know where they are. Remove old pages so users cannot go to them in case they have been indexed by a search engine or a user bookmarked the page. Check links and fix broken links.