What does "programmatic accessibility" refer to?

Programmatic accessibility refers to the ability of assistive technologies, such as screen readers, to interpret and interact with the content and functionalities of a web application or site through the code that underlies it. This involves ensuring that all user interface elements, navigation, and features are properly coded with accessibility standards in mind, enabling users with disabilities to use the application effectively.

This encompasses proper use of HTML semantic elements, ARIA (Accessible Rich Internet Applications) attributes, and other techniques that help assistive technologies understand the structure and behavior of the web content. By focusing on how the code communicates with these technologies, developers can create a more inclusive experience for all users.

The other options refer to specific aspects of accessibility or usability that, while important, do not encapsulate the broader concept of programmatic accessibility. Color distinction supports visual accessibility but does not directly involve the underlying code interaction, mobile design prioritization addresses user experience on mobile devices, and audio descriptions enhance media accessibility but are only one facet of the overall goal of ensuring all functionalities are programmatically accessible.