Search Indexation

Whether a given URL is actually in Google’s index at all — the binary precondition that sits beneath ranking, impressions, and clicks. A page that isn’t indexed can’t rank for anything; it is invisible regardless of how well it’s optimized. Indexation is the floor of the funnel that search-marketing measures.

The measurable floor

Indexation matters to this wiki because it is the measurable half of the recurring measurement tension. GSC‘s Index coverage report and third-party “index checker” tools both answer a yes/no question — is this URL in the index? — with a definite answer. That stands in sharp contrast to the wiki’s central measurement gap: whether an AI Overview or a GEO answer considered a page is not observable at all. So the old, technical layer of search is verifiable; the new, AI-recommendation layer is not.

Indexed ≠ ranking ≠ recommended

Three distinct states, easy to conflate:

• Indexed — in Google’s index (checkable via GSC or an index checker).
• Ranking — placed for a query (GSC Performance report: position/impressions/clicks).
• Recommended — surfaced by an AI Overview / model answer (not measurable — the gap).

Confirming indexation first lets a team separate a search-visibility problem from an organic-demand or merchandising problem — see the operational use cases in google-index-checker-use-cases.

Indexation is not permanent — the crawl-economics gate

Being indexed is a state Google maintains only while it’s worth the compute, not a one-time achievement. Per crawl economics (scaled-ai-content-crawl-economics), a page not re-crawled within ~75–140 days — typical of thin/programmatic content that never earns user signals — risks removal from the index, and Google reduces crawl frequency to low-value clusters, compounding the drop. So the floor itself can recede: mass-produced pages can be indexed in an initial burst and then de-indexed as their section decays. Indexation is the measurable floor, but it’s a floor that thin content falls back through.

Related

google-index-checker-use-cases · google-search-console · google-search-essentials · search-marketing · ai-overviews · generative-engine-optimization · crawl-budget · scaled-ai-content-crawl-economics