The Page Speed update: what SEOs need to know

Page speed has been a ranking factor for desktop searches since April 2010, but it was never officially a ranking factor for mobile searches (despite what we’ve all suspected for a long time). Not until July 2018, that is, when Google rolled out the Speed Update . Google’s pushing for a faster mobile experience The Speed Update is the latest in a long list of speed-related updates, tools, and technologies that Google has developed over the last decade – many of which specifically target the mobile experience

See the original post:
The Page Speed update: what SEOs need to know