First saw it at the morning paper: https://blog.acolyer.org/2017/03/31/bbr-congestion-based-con...
This is the story of how members of Google’s make-tcp-fast project developed and deployed a new congestion control algorithm for TCP called BBR (for Bandwidth Bottleneck and Round-trip propagation time), leading to 2-25x throughput improvement over the previous loss-based congestion control CUBIC algorithm.