[bashtoni]

My expectation would be that Prime Day just causes AWS to get a little further ahead than normal with provisioning new infrastructure.

With AWS still growing they are constantly having to add hardware. Ahead of Prime Day, I presume they just bring forward new resources that their model otherwise says aren't needed for a few months.

Unavailability for other customers indicates either AWS growth has plateaued, they have hit the limit of throughput of how much hardware they can provision, or they just did their sums wrong.