If you run a small business that doesn't require enterprise-class WordPress hosting, I suggest checking out A2, the category's co-Editors' Choice. The Linux-based A2 offers four excellent WordPress hosting tiers, starting at $7.99 per month, offers unlimited storage and monthly data transfers across the board. The plans top out with the $24.46 per month managed package that includes unlimited databases and websites.
Security – At WP Engine, our mission is to help our customers win online. We know that our customers’ sites represent their businesses, their livelihoods. They rely on us to protect them from attacks. As a result of our security layer, we block over 150 million bad requests every month. We proactively block numerous web application attacks, provide security maintenance and craft a one-off plugin/patches for vulnerable customers and automatically upgrade customer sites with the latest security updates.
Pros – high uptime, high performance (sites can handle 100s of visitors at once without nose diving performance), patches are taken care of, CDN is awesome, snapshot and staging site saves our developers 100s of hours of time, site migration plugin makes moving sites easy, support is responsive and 24/7 (a few years ago it wasn’t some there are conflicting things around the web on this)
From their backend process, the first customer type seems to be WordPress developers and designers who want to focus on development & design without dealing with hosting maintenance – and have clients who have some budget. The designer/dev builds the site directly in WP Engine’s staging environment, launches the site, then hands the website over to their client.