If you have read about accessibility in the past, you have likely come across the acronym WCAG and may wonder how it fits into the picture.
WCAG stands for the Web Content Accessibility Guidelines, a set of standards developed by the World Wide Web Consortium (W3C) to help people create accessible websites. As of late January of 2018, Section 508 rules officially require compliance with WCAG 2.0 AA.
An explanation of the 'AA' designation mentioned above: WCAG defines three levels of compliance, ranging from 'A', the most lenient level, to 'AAA', the most rigorous level. Each level includes all of the requirements of the next lower level while adding its own additional requirements.