A dynamic zone is a specific section of a web page that can be updated in real time without requiring a full page reload. These zones use ARIA attributes to alert assistive technologies, such as screen readers, about changes to their content. This allows individuals with specific accessibility needs to be notified instantly or gradually of content updates. Key attributes for defining a dynamic zone include: `aria-live`, which indicates whether updates should be announced discreetly, politely, or assertively; `aria-atomic`, which determines whether the entire zone should be read or only the modified parts; and `aria-relevant`, which specifies the type of change to be reported, such as additions, deletions, or text modifications. These zones may also be referred to as live zones, ARIA Live Zones, or real-time zones.