Google Dance is an SEO slang term of the rank volatility that can occur when Google’s algorithm updates, which takes place on a monthly basis. These fluctuations are often expected but can be more severe when Google introduces brand new algorithms that marketers are yet to fully understand.
More recently, Google has started to update algorithms on a daily basis and with less dramatic swings, which means that the Google Dance is less common than it was some years back. As such, it’s a term rarely used by SEO professionals today, who instead only monitor smaller volatility and fluctuations.