title: Why WCAG made 3 level "A", "AA" and "AAA"?
body: <p>What is the purpose of making 3 priority level by WCAG?</p>
  
  <p>is it like?</p>
  
  <ul>
  <li>If client not paying extra or if we don't have much time then go
  for <strong>A</strong></li>
  <li>If client paying then or if we have time to make site compatible go for at least
  <strong>AA</strong></li>
  <li>If client paying and needed according
  to govt. rules then go for <strong>AAA</strong></li>
  </ul>
  
  <p>If we are making site then which level we should we try to achieve, or we should do only on client request?</p>
  
  <p>Although i found these definitions <a href="http://blog.magnoninternational.com/wcag-guidelines/" rel="noreferrer">on this site</a> but these are confusing for me</p>
  
  <blockquote>
    <p>• Priority 1: For all users to access
    the Web content and for Web developers
    to attain Conformance level “A”, these
    requirements must be satisfied.</p>
    
    <p>• Priority 2: These requirements
    should be satisfied by the Web
    developers so that no group finds it
    difficult to access the Web content
    and so as to attain Conformance level
    “AA”.</p>
    
    <p>• Priority 3: These requirements may
    be satisfied by the Web developers to
    facilitate access to Web content for
    some groups and attain Conformance
    level “AAA”.</p>
  </blockquote>