>Maybe it's like a tech company with a known datacenter footprint and standard load pattern, so normal operations can be done in-house cheaper then in the cloud

>Maybe it's like a tech company with a known datacenter footprint and standard load pattern, so normal operations can be done in-house cheaper then in the cloud, but twice a year they have to do 200% traffic and just bite the bullet and scale that out in AWS at a much higher price, but only for those two days, compared to capacity that would sit idle the entire rest of the year. The reason why that mostly works on AWS is that amazon has someone else to sell some of the peak capacity to the rest of the year. With package delivery, you'd need to figure out something profitable to do with the 'holiday delivery trucks' the rest of the year.