When planning large scale computing projects (on this blog are meteorology, LiDAR, GIS, Ansys 3D modeling, etc…) the choice you will be presented with is do you host your own servers or outsource them to a cloud solution (someone else’s datacenter/servers). At first glance cloud computing rates look pretty cheap, but they are only cost effective on a short term-demand basis. Any long term use becomes more expensive than hosting your own processing center. Here is good reference article talking about Return on Investment(ROI) and Total Cost of Ownership (TCO) with High Performance Computing (HPC) and HPC as a Service (cloud)
Ansys linked to this story via LinkedIn.