Azure is absolutely awesome for PaaS. They have libraries for both PHP and Ruby. The services that Azure provides make it really easy to autoscale, use messaging, storage and caching across multiple servers, and there are services for all kinds of stuff like sending push notifications to mobile devices, transcoding video, etc.
I think it's cheaper than IaaS on Azure, but I'm not sure. I never compared them that well. Fortunately there's a pricing calculator on azure.com.
I think it's cheaper than IaaS on Azure, but I'm not sure. I never compared them that well. Fortunately there's a pricing calculator on azure.com.