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As per this article, Netflix only migrated their billing infrastructure not their video streaming service.

They only migrated their billing infrastructure because the rest of Netflix is already in AWS. As far as I'm aware, the only non-AWS Netflix component remaining is their CDN. (And it will likely remain that way.)

That's because they've already migrated their videostreaming infrastructure to AWS (and some in Google Cloud Storage as a failsafe).

This Ars Technica article from February summarizes the multi-year effort: http://arstechnica.com/information-technology/2016/02/netfli...

Just to be clear -- their video streams are still served up via Netflix's OpenConnect appliances. The surrounding infrastructure -- everything "outside" of the play button -- finished moving to AWS.

Their billing system has now joined its siblings in living on AWS.

Those being the colocated servers they give to ISPs?

EDIT: yes. [1] [2]

[1] https://openconnect.netflix.com/ [2] http://www.datacenterdynamics.com/content-tracks/colo-cloud/...

Also the cdn edges they run themselves.

https://www.youtube.com/watch?v=tbqcsHg-Q_o

very cool video.

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