If you need a dev, stage, or prod platform, then Platform.Sh provides a rock-solid Linux environment. It integrates well with a number of build pipelines, and is more flexible than Gumby after a Yoga class. If command line ops don't scare you, they are a very good choice.

The deployment model, the ability to have any type of project container that we want (not limited to just WordPress, etc.), and the support from the Platform.sh team.

What do we like best? Well, we like everything about Platform.sh. Before we decided to migrate our hosting environment to Platform.sh in the early years of the company's existence, we used unmanaged virtual private servers. It was a nightmare for us, we are developers, not system administrators. To achieve a stable and secure hosting environment for our many projects was highly time consuming and kept us up for too many nights while the result was still below par. We knew we had to change something and started testing services like Heroku and DigitalOcean. Nothing we tested really fulfilled our expectations, nothing felt like it had been built for developers who didn't want to think about servers. Rather these solutions were built for sysadmins who wanted to be faster and deploy large numbers of applications easily. We wanted to deploy small numbers of complex PHP projects easily without worrying about servers, firewalls, certificates, etc. When we finally found Platform.sh it felt like this service had been built especially for us. It did everything we had imagined perfectly and has been steadily improved ever since.