Espresso makes Google cloud faster, more available and cost effective by extending SDN to the public internet
Today, we gave a keynote presentation at the Open Networking Summit, where we shared details about Espresso, Google's peering edge architecture-the latest offering in our Software Defined Networking (SDN) strategy. Espresso has been in production for over two years and routes 20 percent of our total traffic to the internet-and growing.
https://blog.google/products/google-cloud/making-google-cloud-faster-more-available-and-cost-effective-extending-sdn-public-internet-espresso/