Google releases "core updates" several times per year in order to improve the overall relevancy of their search results. The latest update, called the May 2022 core update, is now rolling out and will take 1-2 weeks to fully implement.
These updates can cause some noticeable changes to how sites perform, as noted in previous guidance on what site owners should know about core updates. Some sites may see drops or gains in traffic as a result of the update. Google reminds site owners that there may not always be something that needs to be "fixed" in the event of a drop in traffic.
For more information, please see the links below:
Google Search Blog: How we update Search: Improvements to our core ranking algorithms
Google Search Blog: What site owners should know about core updates
Danny Sullivan, Public Liaison for Search, posted an update about the May 2022 core update. He confirms that the rollout is complete and provides a link to a forum thread where webmasters can provide feedback.
Sullivan also notes that there is nothing in a core update that targets specific pages or sites. The changes are about improving how our systems assess content overall. These changes may cause some pages that were previously under-rewarded to do better.