Cloud is a very ambiguous term. To me a cloud is the abstraction of resources, scaling of which can be done on a colocation basis aswell.

I'm sure provisioining resources within the supplied hardware would be fast as any, and maintains privacy by default for apps where others can charge up to $40/hour/instance

This is the key thing. Previous to 'cloud' as a customer, you'd pre-pay for X amount of rack space, plus energy usage, and if not providing your own kit, X amount of hardware. And then there was the separate billing for management (basically hands-on reboots, or kit recabling). Then there was the (often separate) arrangement for secure network access from your offices to the data centres.

Cloud got rid of all of that. These days you sign a contract, and cherry pick what resources you need from a shopping list, and it's all provisioned in the background, and then deprovisioned when you don't need it anymore. Behind the scenes its all the same stuff it used to be, but now it's all wrapped up in a single service.

Companies love cloud because it means they no longer need a large infrastructure team to manage the server stuff which is a saving, along with the more fluid pricing model - also a saving.

And that's just if you were a real business. If you were just a little guy trying to build stuff for fun, you had to run a server at home or buy a shell somewhere that would let you run your services.

>I just want to do my job, not relearn a language I’ve used for 20 years.

Good thing is you usually don't have to, languages like php really try and makntain backwards compatability, so you _can_ keep doing what you're doing.

Even with some changes, companies rarely ride the wave and come onboard much later when major issues have been ironed out. Hell, there are PHP4 apps still out there

But that's a problem: it maintains backwards compatability with a LOT of well known problems/inconsistencies while introducing more features/inconsistencies for which you can just hope they don't mess up this time. It's a bit of good and a lot of bad from both worlds. I'm just so glad I don't have to use PHP anymore and no amount of a swine's make up will change this.