Accessibility refers to the design and development of products, services, environments, or digital content in a way that ensures they can be used and understood by everyone, including people with disabilities. This involves removing barriers that might prevent interaction or access, and providing alternative methods for engagement when necessary. In the context of websites and applications, accessibility often includes considerations such as screen reader compatibility, keyboard navigation, text alternatives for images, and sufficient color contrast. The goal is to create inclusive experiences that allow all users to participate fully, regardless of their abilities or circumstances.