What does Google say about SEO? /

Official statement

On LinkedIn, Gary Illyes provided some clarification about the independence of indexing systems from algorithm updates, particularly Core Updates. He states that indexing, canonicalization, and the various systems used by Google are completely independent of Core Updates. Furthermore, he refutes the idea that indexing services slow down during the rollout of updates.
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Official statement from (2 years ago)

What you need to understand

Google has officially clarified a point that has been a source of confusion for many SEO practitioners: indexing systems and algorithmic updates operate in a completely independent manner.

In concrete terms, this means that when a Core Update is rolled out, it neither slows down nor accelerates the crawling, indexing, or canonicalization processes of your pages. These systems continue to operate at their usual pace, without being impacted by changes to the ranking algorithm.

This clarification contradicts a widespread belief in the SEO community that Core Updates would be accompanied by unusual crawl spikes or temporary slowdowns in indexing. Google reaffirms that this correlation is a myth.

  • Indexing: a continuous process independent of algorithmic updates
  • Canonicalization: functions autonomously from Core Updates
  • Crawl rate: remains stable during major updates
  • Google systems: modular architecture where each component operates independently

SEO Expert opinion

This statement is consistent with what I've been observing in the field for several years. Traffic fluctuations during Core Updates are indeed related to ranking changes, not temporary indexing issues.

However, a nuance is necessary: if your site experiences deindexing during a Core Update, it's probably a temporal coincidence, not a causality. The indexing problem already existed or stems from another factor (technical issue, robots.txt, insufficient crawl budget).

Warning: This independence doesn't mean that indexing is unimportant for your visibility. Poorly indexed content or incorrectly canonicalized pages can never benefit from a favorable Core Update, even if the content is excellent. The two systems are independent, but indexing remains the absolute prerequisite for any ranking.

In my audits, I regularly find that some sites incorrectly attribute visibility losses during Core Updates to indexing problems, when in reality it's a decrease in relevance as perceived by the ranking algorithm.

Practical impact and recommendations

Following this official clarification, here are the concrete actions to implement to optimize your SEO approach:

  • Don't panic if you observe indexing fluctuations during a Core Update: first look for independent technical causes
  • Separate your diagnostics: analyze indexing and ranking issues as two distinct challenges requiring different solutions
  • Monitor continuously your indexing via Google Search Console, not only during Core Updates
  • Optimize your crawl budget permanently, without waiting for algorithmic update periods
  • Document changes: keep a history of technical and editorial modifications to identify true correlations
  • Prioritize indexing: ensure your strategic pages are properly indexed before working on content optimization
  • Avoid hasty conclusions: a traffic drop during a Core Update is probably not related to an indexing problem

In summary: treat indexing as an ongoing process requiring permanent monitoring, regardless of Core Update cycles. Focus your efforts on your site's technical quality and content relevance on a consistent basis.

These cross-optimizations between technical and editorial aspects require sharp expertise and rigorous long-term monitoring. If you're experiencing difficulties in precisely diagnosing the origin of your visibility fluctuations or implementing an optimal indexing strategy, support from a specialized SEO agency can provide you with the in-depth analysis and personalized adjustments necessary to sustainably maximize your organic performance.

Algorithms Crawl & Indexing AI & SEO Links & Backlinks Social Media Search Console

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