Primary sources, not secondhand summaries
Google Official Resources
This page collects the Google documentation referenced most often when writing about pillar pages, content clusters, and site structure. Sebitu Pewobe is an independently operated editorial blog and is not affiliated with, endorsed by, or sponsored by Google.
Why we anchor our thinking in primary sources
A lot of advice about SEO circulates as paraphrase of a paraphrase, often losing precision along the way. When this blog makes a claim about how Google evaluates site structure or content depth, the goal is to trace that claim back to Google's own published documentation wherever such documentation exists, rather than relying on secondhand interpretation.
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Google Search Central Documentation
Google's core documentation hub covering crawling, indexing, site structure, and general ranking-related guidance for publishers.
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Creating Helpful, Reliable, People-First Content
Google's published guidance on what "helpful" content generally looks like, used as a reference point for depth and relevance questions.
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Google's Spam Policies for Web Search
Google's documentation on practices it considers unhelpful or manipulative, referenced when discussing what to avoid in cluster building.
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Search Quality Rater Guidelines
The publicly available guidelines used to train Google's human quality raters, which describe how depth, expertise, and page purpose are assessed.
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Google Search Console Help Center
Google's own support documentation for interpreting performance reports, coverage data, and indexing status.
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How these resources get used
Turning documentation into practical mapping decisions
Reading a policy document doesn't automatically translate into a whiteboard session. The documentation above generally answers "what does Google say it evaluates," while the mapping and interlinking process on this blog answers "what does that mean for how I organize my own pages." The two are kept clearly separate: quotes and summaries from Google's materials are presented as Google's stated position, and the practical recommendations built on top of them are labeled as editorial interpretation.
Where Google's documentation is updated, the corresponding articles on this blog are reviewed and revised if the change affects any existing guidance. Google product names and documentation referenced here belong to Google LLC; their inclusion is for informational and citation purposes only.