[dodobirdlord]

More likely, there's a work queue and sometimes it gets a bit backed up or falls a little behind while autoscaling resources kick in. Having fully dedicated capacity for something that's handled asynchronously, fluctuates with time, and can tolerate many minutes of processing delay would be a waste of money.

[sgc]

It's Amazon, to me it seems more likely they are tuning their ML with human input than they somehow need an hour to spin up AWS for their shiny new baby.