ADA compliance for a website means the site is accessible to people with disabilities under the Americans with Disabilities Act. Courts and the DOJ apply WCAG 2.1 Level AA as the operative technical standard. Title II separately requires WCAG 2.1 AA conformance for state and local government websites by April 26, 2027 (population 50,000+) or April 26, 2028 (smaller), per the April 2026 DOJ Interim Final Rule.