Netflix's core stuff runs on AWS but they farm out a bunch of boxes to providers and don't pay AWS for bandwidth the way normal people would. http://techblog.n

Netflix's core stuff runs on AWS but they farm out a bunch of boxes to providers and don't pay AWS for bandwidth the way normal people would. http://techblog.netflix.com/2010/12/four-reasons-we-choose-amazons-cloud-as.html http://techblog.netflix.com/2010/12/four-reasons-we-choose-a... > 3. We’re not very good at predicting customer growth or device engagement. That really is a large part of why Netflix runs on AWS. Capacity prediction isn't something they can do reliably due to the nature of their service. That makes sense for a video service. For 99% of websites, you are not going to have trouble with capacity prediction on the scale of 72 hour turn around for additional capacity. Almost any DC can sell you capacity in under 48 hours and if it takes you longer than 24 hours to deploy...yeah...that is on you.