This topic alone would be worth a blog post of its own. But for today I'll leave it to make you curious and share a link with more examples and docs.
It has never been more important than today to optimize the speed and size of your website, especially on mobile devices. Getting a top Google Lighthouse Index score is very important for SEO. A lot can be achieved with Lazy Loading Images, Responsive Images, CDNs, Caching, Minification, and Uglification.
But at some point, you come to the point where you have to take care that the JavaScript bundle is made even smaller.
In my latest article, I tell you more about loadable-components and how to use them.