As defined by the guidelines, to achieve WCAG compliance, digital content must be perceivable, operable, understandable and robust in order to be accessible to all users.
Perceivable content means that all users must be able to perceive and understand all digital content and information featured on a website.
Operable content means that all users must be able to easily navigate information throughout the website.
Understandable means that all users should be able to follow, read and digest digital information displayed on a website.
Robust means digital content should be compatible with assistive technologies and should evolve with assistive technologies.
