Reported from SEO roundtable and Moz the unconfirmed reports are coming in that there was possibly an update to the Google organic search algorithm.

Each year, Google changes its search algorithm around 500–600 times. While most of these changes are minor, Google occasionally rolls out a “major” algorithmic update (such as Google Panda and Google Penguin) that affects search results in significant ways.

For search marketers, knowing the dates of these Google updates can help explain changes in rankings and organic website traffic and ultimately improve search engine optimization. Below, we’ve listed the major algorithmic changes that have had the biggest impact on search. source link

SEO Roundtable’s report is similar to there version here.

There may have been another update late March 27th, mostly on March 28th and through today, with the Google search rankings. I am seeing an uptick in chatter from the SEO community. It might be ongoing from the March 23rd update which is unconfirmed, that some believe are tweaks to the confirmed core update from earlier this month.

Either way, there is a lot of chatter about a possible Google update over the past 24+ hours.

Could this one be related to the rollout of the mobile-first indexing process? Maybe, but the weekend one was not related to that and those tracking this closely aren’t thinking it is a mobile-first indexing thing. See source link here