'Do I need to implement WAI ARIA to comply with WCAG 2.0 AA?

I am building a site that needs to conform to WCAG 2.0 Level AA.

My question is how many of the ARIA roles do I implement?

https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques



Solution 1:[1]

As explained in my answer on User Experience SE, WCAG 2.0 doesn’t require the use of WAI-ARIA.

However, there might be specific situations (depending on your constraints) where you can only meet a WCAG 2.0 guideline by using WAI-ARIA. But this typically only applies to cases where you go out of your way to do something with HTML5 (which already comes with default/implicit WAI-ARIA) for which it was not intended, e.g., creating a form with div instead of form.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Community