Page speed is a measurement of how fast the content on your page loads. This is a core component of all search engines in their algorithmic evaluation of a website and the individual pages of those websites. This is such an important factor for users to engage with a website that Google even created a special tool for the evaluation of your page speed called Google Page Speed Insights.
Page speed has even been determined as such an important user engagement factor that studies have been done showing that even a slight lag in load times can have a large impact on a user’s affinity for a website. In some studies, even a tenth of a second improvement can lead to much better business and user engagement for a website and have a marked improvement on short and long-term brand affinity.