AWS, the bill, the AWS bill, and off by one errors.
Not to mention when credits are applied and how their whole billing cycle works
- there are plenty of companies trying to approach this but when you get into the bigger more complex bills it is still a mystery all around (especially for finance people)
You can't use the cloud when the internet goes down.
You can't use the cloud when the cloud service disappears, or.you get tired of paying the subscription.