The hardware and data center are set up to ensure their customers are getting the most uptime possible.  They do have an uptime guarantee of 99.9% but from what I have been able to find, they are much more reliable than that.  You'll likely never notice any downtime for your site or app hosting needs.

This company has nice features including solid state drives, a super fast 40 GBPS network and much more.  They seem to make all their decisions based on what will help their specific client base the most.  You'll also get free data backup, which is very nice, and a number of APIs, StackScripts and more to help make the job of a developer easier.

This company will provide you with all the support you need to keep your site up and running smoothly at all times.  You'll have quick answers to questions when you have them, and if your site or hosting does run into trouble, they can help get it fixed right away.  The fact that they know all about developers helps make this process even better.

Unlike most hosting companies, you will have the option to just pay as you need it.  This is a common option for hosting companies that are focused on developers because most developers don't need the traditional 'always used' solution.  The prices start at $.015 per hour, or $10 per month.  They go up to $.12 per hour, or $80 per month.  In each case, you get a good amount of hardware and a nice service.