'Information architecture' in web design refers to the organization and structure of content on a website. It determines how information is categorized, labeled, and navigated, making it easier for users to find what they need. A well-designed information architecture enhances the user experience and helps in optimizing the site for search engines. It includes elements like menus, site maps, and tags, ensuring that the content is both accessible and manageable. This strategic arrangement supports content strategy, signifying its critical role in web design.