Purpose and scope

Internal, outbound and incoming describe a relationship relative to a chosen site. They are not three different HTML elements. Read a link from its source page to its destination, then state whose perspective you are using. The three-site diagram keeps those directions visible: a publisher points to an atlas, the atlas points to its own method, and the atlas cites an external dataset. The first and third edges cross site boundaries; each is outbound at one end and incoming at the other.

Read the primary evidence

Google’s link guidance covers navigable anchors and useful internal references. MDN explains href and absolute or relative addresses. Search Console documents a sampled Links report with its own property boundaries, canonical grouping and duplicate handling. A report’s internal/external totals therefore require its definitions; they are not a count you can reproduce merely by comparing visible hostname strings. Keep the source-target evidence separate from a reporting product’s grouping.

Work through the examples

Fictional teaching examples. No page or image is fetched; no link or ranking result is verified.

  • A → B: one edge, two perspectives: The publisher’s story links out to the target’s atlas. That same edge is incoming to the target. It does not establish a return link from the target to the publisher.
  • B → B: navigation within the declared site: The atlas links to its own method page. This is internal for both ends under the declared scope. A backlink report may count differently; keep its scope and unit with the record.
  • B → C: cite an external source: The atlas links to another site’s dataset. It is outbound for the atlas and incoming for the reference site. Adding it does not create an incoming backlink to the atlas.

Make the decision explicit

Fix the perspective before asking whether a backlink is an external link. From its destination, an external incoming link is a backlink. From its source, the same edge is outbound. Creating an outbound citation on your own page does not cause the cited site to link back. An internal link can help readers move between your pages, but it is not another website’s reference. Image, text, sponsored and nofollow describe other aspects and do not reverse direction.

Here each of the three named hosts represents a separate site. Reports may group subdomains differently; declare the scope before classifying real URLs.

Keep a reproducible record

For an audit, write down the chosen site or property, source URL, raw href, resolved target, location in the page and observation time. Resolve a relative href against the document’s applicable base URL before classification; a base element or redirect may change what you should inspect. Keep the original value and the observed final destination separately. Inspect internal navigation with the site’s own page inventory, and incoming references with source pages or an appropriately scoped backlink report.

Limits and follow-up

The diagram is a declared example, not an automatic classifier or live crawl. It makes no claim about which subdomains a particular business regards as one site. A missing incoming record may reflect coverage rather than absence, and a navigable link need not be indexed or confer measurable benefit. Use the existing monitoring and report-comparison guides for evidence over time; do not combine different directions and counting units into one unexplained total.