Here are now few articles that demonstrate how important is the loading speed for your site based on an optimized website (therefore upstream too : a performant hosting service) :
https://www.machmetrics.com/speed-blog/average-page-load-times-for-2020/
https://tribes.no/2013/10/28/how-website-speeds-affects-online-sales
https://blog.kissmetrics.com/loading-time
Read carefully one of these 2 articles to understand how to properly test a website and get to know how simulate the reality of a visitor's experience :
https://support.yoorshop.hosting/knowledgebase/954/How-to-optimize-loading-speed-of-Prestashop-.html
https://support.yoorshop.hosting/knowledgebase/1049/How-to-optimize-loading-speed-of-WordPress-.html
Many people mistakenly think that the IP localization of the server counts enormously, well it is pretty false because this criterion is only ranked 142/200...
- extension of your domain by targeted country plays a major role, rank is 10/200
- loading speed of your website, rank is 23/200 (a server located at less than 5000 km is enough for a good speed)
- presence of SSL certificate, position is 71/200See this article to read
Here is a diagram of our lightening fast 3D SSD servers