Depending on our clients budgets / needs we currently use Digital Ocean or Google Compute Engine web servers that are run on cutting edge PHP stacks. The websites we manage are always stored in UK datacenters, either on their own servers or with other websites we manage.  We do not use cheap shared hosting and never will. Our servers are Industry-leading for price / performance and run on a future-proof infrastructure. 

So content can be delivered quickly anywhere in the world, all of the websites we manage use either the Cloudfare or Google content delivery network (CDN).  Superior hosting is beneficial for SEO and the general success of any website.