The website of #UEFA is a great example for a pain in the ass caused by stupid tech stack decisions.
It's slow in the first place and welcomes you with a blank page, that repaints itself multiple times until it finally shows some content. It takes ages until it is usable.

People looking for information are best served with server side rendered content. You can fetch irrelevant stuff later on, but the core has to be available right from the first bit.
#webPerformance #WebDevelopment #JengaScript