Section 508 Government Site
https://www.access-board.gov/ict/
Federal agencies are responsible for ensuring their information and services are accessible to persons with disabilities. The Revised 508 Standards include not just IT tools and systems, but electronic content such as documents, web pages, presentations, social media content, blogs, and certain emails. Learn more at these sites.
More Information
ADA and Section 508: What is it and What’s the Difference?
https://avantpage.com/blog/ada-508-regulation
What Is 508 Compliance (+Does It Apply to You)?