Choosing Web Hosting
Choosing web hosting – shared hosting, managed or specialised hosting, or a cloud and CDN-backed solution – determines the basic speed, availability and server response time (TTFB) of a website, regardless of how well your own code is optimised.
In practice
For companies whose website matters commercially, a real budget for good hosting is worth it, rather than treating it as an afterthought. That includes the server location relative to the main audience, because physical proximity can improve load time noticeably.