How a page becomes orphaned
A resource list gets redesigned and a guide loses its last link. The guide still opens at its direct URL, but someone browsing the section has no route to it.
An isolated group can contain links between its own pages while having no path from the main site. Those pages also warrant investigation.
Not the same as a broken URL
An orphan page can return a successful response and remain indexed. The problem is the missing route to it, not necessarily missing content. A page with no outgoing links is a different case: links into a page and links out of it describe different relationships.
Finding and handling candidates
Compare a link crawl with a CMS URL inventory, an XML sitemap and available analytics or Search Console records. Investigate missing URLs rather than treating every difference as proof; crawl settings can affect discovery.
If the guide is still useful, restore a link where readers would need it. If it is obsolete, decide what should happen to the content first. Adding a link solely to clear a warning is not a useful editorial goal.
Putting it into practice
How to connect pages around what visitors need next.
Source
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