Akamai and AT&T have renewed their global alliance, extending it through 2019. That will keep Akamai's CDN and web security services on AT&T's business solutions menu, including the addition of DDoS capabilities. Akamai will also be able to further extend it's server footprint out onto AT&T's edge.
The partnership between AT&T's IP network and Akamai's CDN and cloud networking infrastructure was put in place just over four years ago. AT&T ceased efforts to roll its own and moved onto Akamai's platform, and Akamai gained access to AT&T's network infrastructure. Things seem to have gone pretty well since.
There was a time not so many years ago that every network out there wanted to have its own CDN infrastructure. It seemed like the two industries were about to merge, but it never fully happened and Akamai is still going strong. The fact that CDNs and networks remained separate in most cases was perhaps a sign that the more general cloud opportunity would also not gel that well purely within telecom walls.