If you work in SEO, staying on top of Google's algorithm changes is absolutely vital! Here are some recent – and not recent changes you should be aware of.
Google's Penguin update made a splash in 2012 because it added to the importance – and quality – of backlinks!
The Pigeon update was all about local searches, helping those with physical locations that are trying to reach local customers.
Also, "Google Fred update was launched in March 2017. Its main aim was to lower the ranking of websites or web pages that content-wise added no value to users but were completely focused on aggressive monetization through advertisements."
Click the link for more notable algorithm updates!