Google Search’s core updates and your website

Several times a year, Google makes significant, broad changes to our search algorithms and systems. We refer to these as core updates, and we give notice when they happen on our list of Google Search ranking updates. Core updates are designed to ensure that overall, we’re delivering on our mission to present helpful and reliable results for searchers. This page explains more about how core updates work, and what you can do to assess and perhaps improve your content.