Which strategy can help make a site or product's code more robust?

Employing standard HTML markup and ARIA significantly enhances a site or product’s code robustness because it adheres to established guidelines and best practices. Using standard HTML ensures that the code is consistent, semantically accurate, and broadly supported across different browsers and devices, leading to improved accessibility and user experience.

Incorporating ARIA (Accessible Rich Internet Applications) attributes provides additional semantic meaning and functionality to web applications, especially for users who rely on assistive technologies. This combination ensures that the code not only meets accessibility requirements but also maintains compatibility with future technologies and standards, thus making the site more resilient to changes.

Using custom HTML coding without standards can lead to inconsistent behavior across different web platforms. Reducing the amount of code used might simplify a product but can also sacrifice important functionality and accessibility features. Prioritizing visual design over functionality can result in a site that looks appealing but is difficult or impossible for some users, particularly those with disabilities, to navigate effectively.