Google: 1,653 Search Launches With 9,800 Live Experiments & 130,336 Search Quality Tests

We all know Google does a lot of testing, in fact, I probably only cover less than 5% of the tests people email or send me that Google is running. I see tons and tons of UI tests, feature tests, color changes, ranking changes and more. So when Google sends things are constantly changing in search – they are not lying.

The issue is defining what are UI and feature changes versus core algorithm changes. I like to cover the ranking changes and then Google comes back and says we make thousands of changes to search every year. Of course they do, but what percentage of those changes are ranking specific? A much smaller number.

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