What is meant by a AA and AAA accessibility conformance?

Related questions

1. What is accessibility in web design?
2. Is WCAG 2.0 a legal requirement in Australia?
3. Do all employers have to comply with ADA?
4. What are the four major categories of accessibility?
5. Is Ada website compliance mandatory?
6. Who has to comply with ADA?
7. What is WCAG and why is it important?
8. Does Wcag apply to mobile apps?
9. Why is HTML important in creating a Web page?
10. Can you be fired under ADA?

Tags

1. #criteria
2. #presentation
3. #people
4. #visual
5. #accessibility
6. #three
7. #becomes
8. #easier
9. #based
10. #because
11. #higher
12. #impact
13. #divided
14. #organised
15. #level
16. #success
17. #design
18. #makes
19. #levels
20. #conformance
21. #restraining
22. #pages