Yes, with a little bit of work you can achieve performance scores of 100% in tools like Pingdom Tools, GT-Metrix or Pagespeed. The result to the left is actually this site, feel free to verify the test here.
Of course it all starts with ultrafast hosting (I recommend Siteground), but there are many actions you can take, from simply switching on the options in Joomla to advanced tweaking of your server and .htaccess files, but there are also very nice extensions that can greatly enhance performance, making your site ultrafast.
Before optimizing, make sure you test your current website performance with a tool like GT-Metrix.
Webhosting is the cornerstone of your website. Choosing the right host can save you many headaches
Many sites are slow because they use too many frontend extensions like sliders and galleries.
Caching offers users a stored view of a web page so that it doesn't have to be pulled from the database
Leverage browser caching is one of the easiest methods to gain a big performance increase for a site
If you switch on Gzip, all pages are zipped on the server before they are sent to the browser
When your website uses many images, it is important that they are optimized and as light as possible
A CDN is a network of servers around the world to offer resources to users from their nearest location