Your WordPress hosting environment is both the foundation and limiting factor of your online presence. You should choose it very, very carefully because your business rises and falls with it
You should be looking for reliable hosting, where you can test all your changes before going live. If something goes wrong, you need to be able to restore your website in one click. It should be fast and offer you all the tools to make it even faster. There also should be skilled support, in case a problem arises (and this happens more often than you would like it to, trust me).