Accessibility is not an option, it is a necessity. Your site must be usable by everyone, regardless of their physical or cognitive abilities. User experience should always be at the center of your concerns. A successful website is one that meets the needs of its users while remaining aesthetically pleasing. Performance is a key factor in the success of a website. Users expect fast loading times and smooth navigation on all devices. Performance is a key factor in the success of a website. Users expect fast loading times and smooth navigation on all devices.