The Americans with Disabilities Act (ADA) is a civil rights law in the United States that prohibits discrimination based on disability. The purpose of the ADA is to make sure individuals with disabilities have access to the same opportunities, services, and benefits as everyone else. It also provides guidelines for businesses on how they need to make their websites accessible to people with disabilities. These measures include providing alternative text for images, using headings and labeling elements correctly, providing transcripts for audio or video content, and providing keyboard accessibility for all interactive elements. Additionally, businesses must comply with specific regulations regarding website usability by people with disabilities. By following these requirements, businesses can ensure their websites are accessible to everyone.