Accessibility addresses how people with different abilities interact with digital products, including visual, auditory, motor, speech, and cognitive variations. These considerations shape how users perceive, understand, navigate, and interact with digital interfaces in diverse ways.

Accessibility features benefit everyone, not just users with specific needs. Voice commands help both blind users and those with temporary hand injuries. Captions serve deaf users and anyone watching videos in noisy environments. High-contrast modes assist users with visual impairments and those using devices in bright sunlight. Clear, well-structured content helps users with cognitive differences and anyone trying to complete tasks quickly.

Digital products need to work across different situations and user needs. Someone might need larger text due to vision impairment, forgot their glasses, or is viewing on a small screen. Another person might use keyboard navigation due to a motor disability, a broken mouse, or personal preference. Understanding these scenarios helps create more versatile, usable products.