Cisco mobile network report: global data traffic to grow tenfold to 25 exabytes/month by 2019
Stacey Higginbotham / Gigaom :
Context & Ripple Effects
Cisco's annual Visual Networking Index has become the networking industry's shared demand forecast: a year later the company projected that total internet traffic would pass a zettabyte, driven by mobile and double again by 2019, and its 2019 edition shifted attention to how much of that load rides on new radios. This 2015 edition sets the baseline claim — a tenfold jump in monthly mobile data within four years.
The forecast matters because Cisco sells the routing and transport gear carriers buy to absorb that traffic, making the Index both a projection and a sales case. Subsequent data points kept validating the direction: Cisco's own 5G connection-share forecast for 2022, and CTIA's finding that US wireless usage jumped 36% in a single year three decades of compounding later.
First-order effects
- Carriers and network operators get a capacity-planning mandate: tenfold monthly traffic growth by 2019 forces transport and backhaul upgrades well ahead of revenue per bit keeping pace.
- Cisco converts the forecast into pipeline — every exabyte in the Index maps to routers, optical transport, and mobile infrastructure the named buyers must procure.
Second-order effects
- Device-side growth compounds the load: with smartphone adoption reshaping retail, cars, and software per Benedict Evans' 'mobile is eating the world' analysis, video-heavy mobile consumption pressures content delivery and peering economics alongside carrier networks.
- Machine traffic joins human traffic — IDC's forecast of IoT spending climbing toward $1.4T by 2021 means billions of connected devices adding background data flows on top of consumer video.
Third-order effects
- If the tenfold-growth cadence holds, network capex becomes a structural cycle where each forecast generation justifies the next radio and fiber generation — culminating in today's shift where the same vendor class routes hyperscaler AI traffic, as seen in Cisco's reported $4 billion in AI infrastructure orders.
- Annual vendor-published traffic indexes harden into de facto industry planning benchmarks, meaning one company's model of demand quietly shapes regulators' spectrum assumptions and operators' investment timing.
The trend: Mobile data growth has moved from exponential consumer-video expansion toward machine- and AI-driven traffic, with vendor forecasts like the Visual Networking Index steering carrier investment across each wave.