Pagination
Pagination breaks long lists into numbered pages. Poorly designed, it buries deep elements and wastes crawl budget; well designed, it exposes every element within three clicks from the surface.
In practice
Stable best practices: each paginated page indexable with its own canonical tag, links to neighbouring pages and endpoints, and finer groupings when a series exceeds a few dozen pages. A JavaScript-only 'load more' button without a URL makes subsequent items invisible to crawlers.