Accessibility (or accessible design) is the practice of designing products, interfaces, and services so that they can be used by as many people as possible, including people with disabilities. This involves considering users with visual, auditory, motor, or cognitive impairments and ensuring they can perceive, understand, navigate, and interact with the product. Designing for accessibility might include providing text alternatives for images (so screen readers can describe them), using sufficient color contrast for text, enabling keyboard-only navigation (for users who cannot use a mouse), and designing forms and controls that are easy to understand and operate. An accessible design not only benefits users with permanent disabilities but also those with situational limitations (like a noisy environment or bright sunlight) and generally leads to a better user experience for all.