Adequate uptime rate:
The most dominant and essential feature that cannot be ignored or negotiated. It is technically impossible to get 100% uptime for a website, but the better the uptime, the better the website reputation. While working with shared hosting, uptime is not too excellent, and the server might not be good enough as WordPress needs to run lots of plugins, databases, and many more. So VPS or dedicated hosting will be quite good enough for WordPress websites.