I’ve read many stories that say IaaS is the future of computing. I disagree. All IaaS does is take the ghosts of networks past and shove them into the cloud. Granted, there are a few benefits in IaaS—mainly that it’s not all legacy infrastructure running in cloud VMs. But when I think of the future of computing, and more specifically the future of cloud computing, I see SaaS offerings like Office 365 as the last “aaS” standing.
In other words, I see IaaS and PaaS as interim technologies, not as the long-term future. They’re cloud-based halfway houses for the datacenters that IT has long focused on. But the move to SaaS means you won’t ultimately need to run anything like a datacenter, whether locally or in the cloud.