My company used WPEngine for a while until we wanted to move from a blog. subdomain to a subfolder for SEO reasons. WPEngine doesn't support this, so we decided

My company used WPEngine for a while until we wanted to move from a blog. subdomain to a subfolder for SEO reasons. WPEngine doesn't support this, so we decided to host our own. We are on AWS and have a pretty sophisticated Chef setup, but I want to stress that if you are a SaaS company, you do _not_ want your Wordpress install as part of your production network. By running Wordpress yourself you're taking on upgrade responsibilities, and you need to be pretty diligent in upgrading in order to avoid exploits. At minimum you should put Wordpress in its own VPC; we ended up running on Heroku instead to keep it as far as possible from our production infrastructure. If I were setting up a new wordpress blog for a company I'd go with WPEngine if possible, if not I'd host on Heroku, and only if it needed to scale a lot would I consider hosting it myself on AWS.