functionality: Can the website functionally perform a needed task?
usability: When performing tasks, is it conventional and/or easy to do?
accessibility: Is the website widely usable for people with specific requirements (device, internet connection, physical impairment)?
aesthetics: Is the website visually appealing?
screen readers require alt text to be described for visually impaired users, it is best for websites to follow the ARIA standard (Accessible Rich Internet Applications).