At the risk of bringing up the dreaded name here, these kinds of billing shocks were one of the problems Oracle wanted to solve with Oracle Cloud Infrastructure

At the risk of bringing up the dreaded name here, these kinds of billing shocks were one of the problems Oracle wanted to solve with Oracle Cloud Infrastructure (OCI). So it has been built from the ground up with variable limits and quotas in mind. Every service has them from the outset so that customers can control their maximum expenditure. When they started out building OCI, the major clouds weren't offering this as a key feature. Enterprise companies do not want infinite billing. They want fixed and reliable billing, more than anything else. With on-prem equipment they know a few years in advance what their expenditure is going to be at any time, and will have a budgeted amount over the top of that that they're on-board with. Bring the idea of autoscaling with limits, and they're very happy indeed, particularly with the idea of automatically scaling down. > Azure has, built in, hard price/cost limits but doesn't allow the public to use them. For example if you have MSDN subscription credit you get a hard limit of up to $150/month, but you yourself cannot pick a bespoke limit to use the service more safely. I would be willing to bet that that is something enterprise customers can get access too, particularly if their annual expenditure is high enough under normal operation. Microsoft knows the enterprise market very well, just like Oracle does, and like Amazon doesn't (historically speaking, at least).