Accessibility in web applications is crucial to ensure that users with disabilities can fully engage with a site's features, and neglecting it can lead to significant user exclusion and potential legal issues. The text outlines a guide for auditing websites for accessibility, using tools like axe to identify issues, and demonstrates practical solutions like implementing keyboard navigation, skip links, and prefers-reduced-motion for reduced animations. It highlights common pitfalls, such as insufficient color contrast and keyboard navigation traps, using examples from personal websites and platforms like Dribbble. Additionally, the text emphasizes the importance of automated tools to streamline the process while acknowledging that accessibility is a broad subject with areas like screen readers requiring further exploration.