WAI, short for Web Accessibility Initiative, is a set of guidelines and standards developed by the World Wide Web Consortium (W3C) to ensure that websites and web content are accessible to people with disabilities. This includes making websites perceivable, operable, understandable, and robust for all users, regardless of their abilities or the devices they use. WAI aims to promote equal access to information and services on the web, creating a more inclusive and user-friendly online experience for everyone.