When using public cloud computing, clients are often under the impression that there is unlimited capacity on the major vendor platforms such as AWS or Azure, available whenever you need it.
However, due to the popularity of many popular “instances”, capacity is not actually unlimited, there is a finite number available at any time in any particular public cloud data center.
For this reason, from time time to time you may experience capacity issues when there is more demand than capacity. For example, on AWS this is the error you will receive when trying to spin up instances when there is no capacity available:
If you need the on-demand access “right now” to get an answer back, this can be a bit disconcerting.
Using a vendor like TotalCAE we avoid these scenarios by spinning up our public clouds in multiple public cloud data-center locations. or even completely different public cloud vendors including Azure, thus avoiding any delay in running your on-demand jobs.