What are WCAG 2.1?
To really understand why WCAG is so important, one needs to know the institution that conceived it. The WCAG were created by the World Wide Web Consortium, known as the W3C. The W3C was founded in October 1994 in the halls of the MIT Computer Laboratory (MIT/LCS), when global Web activity was beginning to increase exponentially. The organization consists of more than 440 members including leaders of companies, nonprofit organizations, universities, government agencies and relevant industries, as well as top scientists in the field.
W3C originally focused on standardizing web protocols so that websites and web tools would be compatible with each other. Each W3C standard is reviewed several times, tested and analyzed before being approved by members. Usually, W3C standards have 3 levels of compliance, from A to AAA.
Web accessibility was one of the first issues addressed by the W3C. The first WCAGs were published in 1999, revised in 2008 as WCAG 2.0 and updated again in 2018 in the form we use today, the 2.1