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Core Updates mean upgrading the core Google search systems and algorithms. Updates, adding new systems. A lot of testing has to be done, entire backups of the www is taken. The data centers fall over to others while being upgraded. As well as maintenance systems, crawlers, updates to the GSC data export utilities.
Google Systems are spread out all over the world and they also have PoPs in ISPs to accelerate delivery. Thats often why You can see the Google search screen but all other sites seem really slow
Spam updates add new heuristics and/or new algorithms for detecting spam. So it could be updates to detect scaled content or new link farm heuristics.
# Official Pages
[https://status.search.google.com/products/rGHU1u87FJnkP6W2GwMi/history](https://status.search.google.com/products/rGHU1u87FJnkP6W2GwMi/history)
# Misinformation in Updates
Funfluencer Red Flags:
Anyone who tells you that Google “Doubled down” on X or Y – like AI content, Quality, Information gain – are all lying – there’s no such release or very limited information given by Google in most updates.
There are no “content quality” systems in Google – there are systems to detect machine generated gibberish or thin affiliate content. But there is no “thin content” and Google cannot “gauge” content quality – this is an old, old myth that refuses to die: but beauty is in the eye of the beholder – any attempt to “grade” content requires some level of subjectivity.
>I’m wondering how the rollout actually works. Could my website see changes during the rollout, or multiple times? I
Yes. So – Google’s “primary” algorithms role is to asses and count “authority” by topic = Topical Authority. As new systems come online – your scores could fluctuate – thats why Google’s general advice is that you shouldn’t make major changes – like deleting a page because you saw a drop esp if you’re new to SEO.
TBH – most people should see too much happen – maybe GSC will be a day or two out of date..
[https://developers.google.com/search/docs/monitor-debug/debugging-search-traffic-drops](https://developers.google.com/search/docs/monitor-debug/debugging-search-traffic-drops)
