IoT is Redefining the Network Edge – Part 2

In the first part of this series, George Mulhern, CEO of Cradlepoint, highlighted Software‑Defined Networking (SDN) as the most significant shift in enterprise networking since the Internet itself. One of SDN’s most tangible impacts is the transformation of the Wide Area Network (WAN).

Today’s work is no longer tied to a physical office; it occurs wherever people and devices can connect. The Internet of Things (IoT) will soon comprise the majority of endpoints, turning the network edge from a fixed point into a dynamic, "Elastic Edge" that adapts in real time to business needs.

The Elastic Edge

Transitioning to this model presents challenges, but a convergence of cloud‑based management, Software‑Defined WAN (SD‑WAN), and increasingly affordable LTE services is enabling a unified, elastic connectivity layer for the connected enterprise.

These technologies empower organizations to build self‑optimizing, self‑healing WANs that deliver pervasive, low‑cost connectivity to every endpoint. Unlike legacy networks—managed solely by IT—modern network functionality now spans the entire organization.

Legacy architectures were designed for a handful of branches and limited staff. With IoT extending business reach far beyond traditional building walls, IT must manage a constantly evolving edge that expands, contracts, and adapts as demand shifts—across seasons, regions, and work patterns.

To meet this demand, networks must be connected, protected, highly agile, and centrally managed from a single, cloud‑based console.

From Fragile to Agile

Traditional WANs, heavily reliant on costly MPLS circuits, are bandwidth‑constrained and difficult to scale. SD‑WAN mitigates these limitations by aggregating multiple low‑cost, high‑performance Internet links—including 4G LTE—into a hybrid edge that applies real‑time policy and intelligent path selection for continuous application performance optimization.

However, bandwidth is only one side of the cost equation. Complexity—measured by the number of personnel required for operation and the lag it introduces to deployment—has historically slowed business agility. Even minor changes can take weeks or months to implement in legacy environments. SDN turns the WAN from a fragile, manual system into a cloud‑native, elastic platform that leverages automation and orchestration for rapid, error‑free changes.

The IoT Connection

Coordinating mobile users and a growing number of IoT devices demands security that extends beyond static perimeter boundaries. Software‑Defined Perimeter (SD‑P) solutions allow enterprises to safely harness the public Internet through a “dark cloud” of private IPs, rendering the entire network invisible to external attackers.

By assigning private IP ranges, administrators can grant staff and IoT devices access only to the resources they require, minimizing unnecessary traffic. Additional security services—such as firewalls and IPS/IDS—can be layered and orchestrated from the cloud, whether the device is fixed, mobile, in a vehicle, or in the field.

The Elastic Edge requires a next‑generation WAN that supports every endpoint—whether it’s a fixed office, a mobile branch, an IoT sensor, or a traveling employee. From SD‑WAN for static locations to SD‑P for IoT and remote users, the right toolset will bring your network into the new connected era.

Author: George Mulhern, CEO, Cradlepoint