How pages relate to each other.
WHY STRUCTURE MATTERS
It helps visitors find things, helps engines understand what the site is about, and distributes authority between pages.
A GOOD STRUCTURE
A clear homepage Main sections reachable from the navigation Content organised into logical categories Important pages within a few clicks of the homepage
Anything buried five levels deep is rarely crawled well and rarely found by visitors.
INTERNAL LINKING
Link from your content to related pages, using text that describes the destination.
This helps engines understand which pages matter and what they cover, and it keeps visitors on the site.
PRACTICAL HABITS
When publishing something new, link to it from an existing relevant page. Otherwise it is an orphan. When writing, link naturally to related content you have already published. Review your most-visited pages and ensure they link onward to where you want visitors to go.
NAVIGATION
Keep it simple. A menu with thirty items helps nobody.
BREADCRUMBS
Useful on larger sites, for both visitors and engines.