# Foundations — Blog — Khadija Zaman

> The SEO layer that AI search visibility is built on. Topic clusters, the central entity of a site, and how SEO, AEO and GEO sequence. Skip this layer and every optimization above it is applied to a site an engine never trusted in the first place.

Source: https://khadijazaman.com/blog/category/foundations/

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# Foundations

The SEO layer that AI search visibility is built on. Topic clusters, the central entity of a site, and how SEO, AEO and GEO sequence. Skip this layer and every optimization above it is applied to a site an engine never trusted in the first place.

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Foundations12 Aug 2026 · 14 min

## Central Entity in SEO: What Google’s “Identifying Topical Entities” Patent Actually Describes

How Google’s Identifying Topical Entities patent application confirms a page’s main topic, and how a central entity anchors a topical map.

Read the post →](/blog/central-entity/)[

Foundations14 Jul 2026 · 5 min

## Topic Cluster Architecture That Actually Scales Organic Traffic

Publishing more rarely fixes a plateau — fragmented architecture does. How to structure pillars, clusters, and internal links so authority concentrates.

Read the post →](/blog/topic-cluster-architecture/)[

Foundations18 Jun 2026 · 5 min

## SEO vs AEO vs GEO: What Each One Actually Means, and How to Sequence Them

SEO, AEO, and GEO are layers, not rivals. A working definition of each, where they genuinely diverge, and the order to build them so the work compounds.

Read the post →](/blog/geo-aeo-vs-seo/)

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