Each year, Google changes its search algorithm between 500 and 600 times. Although most of these changes are minor, Google occasionally publishes a “significant” algorithmic update (such as Google Panda and Google Penguin) that has a significant impact on search results.
For search engine marketers, knowing the data from these Google algorithm major updates can help explain changes in organic website rankings and traffic, and ultimately improve search engine optimization. Then we list the most important algorithmic changes that have most affected research.
Here is the infographic of Google Algorithm Major Updates 2018:
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