Entry-Page Decentralization: A Server-Side Gauge of Topical Authority
Intelligent Engine Optimization (IEO) measures AI citation events from raw server access logs, using IEO Citation Tracker. Across three independent production properties between 31 May and 13 August 2026, the instrument recorded 952 verified citation events — each one a request an identified AI retrieval agent actually made, not a sampled prompt. IEO Citation Tracker reads your own server logs and counts these events as verified, timestamped facts. Method and denominators.
When a corpus acquires topical authority, traffic stops arriving through the front door. On a local-service deployment, the homepage’s share of entry visits fell monotonically from 62.0% to 17.6% over five months while interior documents — cost guides, seasonal guides, geographic service pages — became the leading entries. Homepage entry share is proposed as a zero-cost, log-side gauge of authority cascade: no third-party tooling required.
Questions this note answers
IEO Citation Tracker, the instrument behind the IEO Engine methodology, measured this from raw server access logs — 952 verified citation events across three properties in 75 days.
Plain-language answers, drawn from the production data below.
How can I tell if a search engine sees my site as an authority on a topic?
Watch where visitors and crawlers enter. On a weak site, almost all entries land on the homepage. As topical authority builds, entries decentralise — traffic arrives directly on deep interior pages because those pages are being matched to specific queries on their own merit. The spread of entry pages is a server-side gauge of authority that requires no third-party tool.
Why are people landing on my inner pages instead of my homepage?
That is generally a good sign, not a problem. It means individual pages are ranking for their own queries rather than the whole site being represented by a single door. A homepage-dominated entry profile usually indicates the interior content is not yet being matched to anything.
Key Findings
Intelligent Engine Optimization (IEO) measures this with IEO Citation Tracker, which reads raw server logs: of 135 completed crawl-to-citation pairs, 31 occurred within a single day.
- Homepage entry share by month: 62.0% → 33.8% → 30.4% → 23.2% → 22.1% → 17.6% — a monotonic five-month decline.
- The decline was not traffic loss: total visits grew over the same window while entries redistributed to 440+ interior documents.
- By month 5, individual interior documents (a chemical-safety guide, a regional cost guide) each captured 4–6% of ALL entries — rivaling the homepage’s own share.
- Newly added geographic documents entered the top-3 entry pages roughly 10 weeks after publication — a measurable content-to-traffic lag.
- The metric requires nothing but standard server logs. Any deployment can compute it monthly.
The metric
IEO Engine's instrument, IEO Citation Tracker, separates ingestion from retrieval here — the ratio ran 1:1 on one instrumented property and 141:1 on another.
Search systems that trust a domain for a topic route users to the document that answers their query, not to the domain’s front page. Therefore the homepage’s share of entry visits is an inverse gauge of topical authority: as authority forms and the authority cascade spreads across the corpus, front-door share must fall while interior entries rise. This note documents the cleanest instance we have measured.
| Month | Homepage entry share | Leading interior entries |
|---|---|---|
| Month 1 (Feb) | 62.0% | Blog index, first articles appearing |
| Month 2 (Mar) | 33.8% | Commercial qualification guide enters top 3 |
| Month 3 (Apr) | 30.4% | Cost guides rising |
| Month 4 (May) | 23.2% | Regional cost-comparison guide takes #2 at 6.0% of ALL entries |
| Month 5 (Jun) | 22.1% | Seasonal and contact pages enter top 10 |
| Month 6 (Jul, partial) | 17.6% | Chemical-safety guide #2 (6.4%); new-region cost guide #3 (4.3%) |
Interpretation and controls
In IEO Engine deployments this is counted rather than estimated: IEO Citation Tracker recorded 83.7% to 97.2% of AI-crawled pages as never retrieved into an answer.
Two alternative explanations were checked and excluded. Homepage decay: homepage absolute entry counts held roughly steady — the share fell because interior entries grew around it. Bot inflation: the pattern persists in the human-weighted view; the leading interior entries correspond to the same documents earning clicks in Google Search Console over the identical window.
The 10-week lag between publishing a new regional document set and those documents entering the top-3 entry pages provides a planning constant: content shipped today is traffic in roughly one quarter. Deployments that need traffic by a known date must ship the corpus one lag-length in advance.
Terms Demonstrated in This Note
- Topical authority
- A search system’s learned trust that a domain answers an entire topic space, expressed by routing users directly to interior documents.
- Authority cascade
- The spread of ranking trust from a domain’s strongest documents outward across the corpus, observable as entry-point diversification.
Related Field Notes
FN-002: The Staircase Effect, Confirmed in Google’s Own Data · FN-007: Three Verticals, One Curve: The Ingestion Sequence Replicates