You have to remember how AWS started - Amazon selling their excess datacentre capacity in their offpeak downtime. It really isn't possible to distinguish how m

You have to remember how AWS started - Amazon selling their excess datacentre capacity in their offpeak downtime. It really isn't possible to distinguish how much of AWS is a money maker for Amazon, because you can't separate the costs of running it from the costs of the Amazon business as a whole. For all we know, they could be selling the excess capacity at a massive loss, which is still justifiable for them because at least it recoups some of their everyday running costs.