But that is literally not possible with hardware you purchase yourself.
Sure, you can buy X amount of hardware, and provision up to X amount of virtual hardware via an API, but then what? You can't provision any more until you go and buy more hardware. This is why "cloud, but local" is a contradiction IMO. You can only be "cloud-like" if you're under-provisioning. The moment you want to actually use all of the capacity you already paid for, you're not a cloud any more, because you've provisioned all of it.
> But that is literally not possible with hardware you purchase yourself.
Sure it is. I think TFA is talking about a company selling you exactly that capability.
> You can't provision any more until you go and buy more hardware.
But this is also true of AWS etc. When their estate gets full, they need to go buy more hardware. Regardless of who owns the tin, someone's doing a capacity plan and buying hardware to meet demand.
The point of 'cloud' is that you move that function out of the domain who are actually using resources to solve business problems, which is where it traditionally sat. Historically, if you wanted to run a service, you had to go buy some hardware and hire someone to manage it for you.
A cloud-like model means that the application engineers no longer care about servers, disks and switches. Instead, they just use some APIs to request some resources and then deploy a workload onto them. The details of what hardware, where and how is fuzzy and abstracted. Or cloud-like.
> You can only be "cloud-like" if you're under-provisioning
Everyone under-provisions. Nobody runs at 100% utilisation.
But that is literally not possible with hardware you purchase yourself.
Sure, you can buy X amount of hardware, and provision up to X amount of virtual hardware via an API, but then what? You can't provision any more until you go and buy more hardware. This is why "cloud, but local" is a contradiction IMO. You can only be "cloud-like" if you're under-provisioning. The moment you want to actually use all of the capacity you already paid for, you're not a cloud any more, because you've provisioned all of it.
No elasticity, no cloud.