The DOJ's April 2024 final rule under Title II of the ADA formally establishes WCAG 2.1 Level AA as the enforceable technical standard for digital accessibility. State and local government entities must comply by April 2027 (large) or April 2028 (small), with an additional year granted by the April 2026 Interim Final Rule. The standard's four principles — Perceivable, Operable, Understandable, Stable — cover everything from alt text and keyboard...