Amazon Blueshift

... Which, surprisingly enough, is actually publicly accessible, at least in a very small part. Amazon tends to name their office buildings with terms that have some sort of meaning inside their weird corporate universe; this one is named blueshift, and while I'm not sure what meaning that has to Amazon, the use I'm familiar with is in astronomy, where it refers to a form of the Doppler effect in which light sources moving towards an observer shift towards the blue end of the color spectrum.