A couple hours ago, Google's Andrey Lipattsev a Search Quality Senior Strategist participated in a Q&A with Bill Slawski, Ammon Johns, Eric Enge and Anton Shulke.
Andrey Lipattsev gave one of the most detailed explanations on why it is so hard for Google to confirm or deny algorithmic updates, including why there was so much confusion around what it means that an algorithm is part of the core algorithm. Let me summarize the long explanations and then share transcripts (I type fast) and the video):
What Does Core Mean?
In short, it means that the algorithm that is part of the core algorithm is now pretty solid and consistent that it can just join the family of algorithms that Google knows works. Google will not update it that often anymore, they trust it just works. It will continue to run, just like PageRank runs.
In fact, he said he doesn't believe there is a list of which algorithms are part of core and which are not.
Why It's Hard To Confirm Some Update
Google is constantly making changes, some are experiments, some are samples, some are larger updates as well. Within some algorithms, they might make tweaks daily, weekly, monthly. Some algorithms they may launch once and not update it again. We've seen examples of the algorithms that get tweaked and then not get updated for a while with Penguin. With Penguin it was updated a lot after Penguin 3.0 launched and then laid dead for 15+ months.
In addition, some algorithms use continuous crawl data, some crawl their own data periodically, some have their own fetch systems. The cycles this happens can be on a pattern or sporadic or never, it depends on each element.
Finally, if Google makes a tweak to one line of code, is that an update. Or does it take 50 lines of code, 500 or 5,000 lines of code. When is it enough of a tweak to call it an update?
Source : https://www.seroundtable.com
Source : https://www.seroundtable.com