This is part of a continuing series of web accessibility tips for IT personnel, web managers and web development groups. These tips can be used to review current website accessibility and to utilize in developing new websites with the hope of improving web accessibility for everyone.
Robustness addresses the technology implications of accessibility. It requires following web standards (e.g., valid HTML and CSS), creating content/functionality that works across various user agents (web browsers and assistive technologies), ensuring compatibility with various hardware (such as mobile devices), and considering present, future, and older technologies. While it does not mean that a web site must be compatible with all present, future, or former technologies, it does suggest that consideration be given to ensure accessibility to the broadest range of technologies feasible.