The treatment of Web accessibility is not only following the Web Content Accessibility Guidelines (WCAG) to strictly comply with technical aspects. The development processes of web applications are very much centred in the architecture, which are normally very distant to the user. This requires integrating usability and accessibility in software engineering processes incorporating a User-Centered Design (UCD) and Inclusive Design. In this paper, an integration of usability techniques in the whole life cycle of a web application is shown. This work is part of AWA framework (Accessibility for Web Applications) that provides a methodological support for the development of accessible web applications.