AT&T Looks To Mitigate Impact Of Saturated Wireless Market With SDN Adoption

However, changing the architecture and implementing it across the entire network could take years, and the carrier has therefore not lowered its CapEx estimate of $21 billion for the year. Going forward, it expects the project to put a "downward bias" in its capital expenses over the next five years as increasing use of SDN (software-defined networking) more than offsets the impact of rising data traffic.