In the last months at DriveK, I’ve worked a lot with WP Engine.
WP Engine, for those who don’t know, is a managed WordPress hosting company. They have worked hard on their infrastructure performance and security to give a top-notch service.
If you have a WordPress site, just create an install and forget about all those server related issues. It’s all on their side. You only have to think about your application, your themes, and your plugins.
The flip side of this is that the infrastructure is invisible. There is no concept of VPS, server, physical machine, virtual machine and such. And this means (as of January 2016), no SSH access.
That’s where deployment issues arise.