According to the official WordPress documentation, the following hosting specifications are recommend;
The full list of WordPress requirements can be found here: https://wordpress.org/about/requirements/
We do not require any additional functionality for the theme to function however we have additonal features that will work if your hosting enviorment supports them.
We have a list of our recommended hosting providers that are tested to ensure fully compatibility with our products.
https://www.premiumpress.com/wordpress-hosting/