Additionally using providers such as Google includes some bitter taste when it comes to independency and data privacy. Fetching fonts from a remote provider may break your site’s design whenever the provider’s servers are down are stressed too much, thus slowly responding. Since fetching fonts is done by your site’s visitors every visit to your site can be tracked by remote font providers resulting in a probably undesired data leakage.
Google knows everything. Tracks also use of their hosted fonts on your site.
I would prefer hosting licenced fonts on a by me controlled server.
I must say I have never done that before, never needed it. Because I was comfortable with the common standard webfonts that lives on all platforms.