Spotlight: Open source SDN technology is now quite pervasive in AT&T's networks
It just goes to show how software-defined networking is starting to become a big thing when major telcos not only adopt SDN technologies, but migrate a sizeable chunk of their infrastructure over to the technology. AT&T is an example of a telecommunications services provider that not only adopted SDN, but also open source. An article on The Register noted that nearly half of AT&T's networks are now controlled by open source SDN code. Much of that is likely based on OpenDaylight, which the telco contributes to, but AT&T also contributes to both OpenNFV and ONOS. Read more.