Google has confirmed that a broad core algorithm update was released last week.
This is the type of update that occurs several times per year, Google says, which could bring one or more changes to search results.
Google was not specific as to what changes were implemented— it could be anything from changes focused on specific improvements, to broad changes affecting all search results.
Each day, Google usually releases one or more changes designed to improve our results. Some are focused around specific improvements. Some are broad changes. Last week, we released a broad core algorithm update. We do these routinely several times per year….
— Google SearchLiaison (@searchliaison) March 12, 2018
Sites may see drops or gains in rankings as a result of the changes that occurred, which Google says is normal. It sounds as though rankings will fluctuate according to how pages should have been ranking prior to this update.
”There’s nothing wrong with pages that may now perform less well. Instead, it’s that changes to our systems are benefiting pages that were previously under-rewarded.”
Should you notice rankings drop following this update, Google notes there is no particular “fix” other than to continue “building great content.”
UPDATE: For more on this update, see: Google’s Broad Core Algorithm Update Examined.