White Papers

Accommodating the Shift to Cloud in Branch Networks

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Lee Doyl e | Doyl e Research | © 2018 D oyl e Research Executive Summary Distributed organizations in all industry verticals are being impacted by mega IT trends such as the increased use of cloud/SaaS-based applications, pervasive mobility, and adoption of Internet of Things (IoT) applications. This digital transformation requires IT to be agile and responsive to changing organizational requirements while maintaining reliability, ensuring security and controlling costs. Digital transformation impacts the design and operations of the enterprise network, both LAN and WAN. The network must deliver reliable, high-performance access to a multitude of cloud- based applications. It needs to authenticate and connect a range of mobile devices in widely distributed locations (branches, home offices and mobile workforces) via physical and wireless 4G LTE networks. Also, the network must provide the secure on-ramps for numerous (hundreds or even thousands) of IoT devices – including physical security, cameras, sensors and more. SD-WAN enables direct access to cloud/SaaS-based applications without the need to connect via the corporate data center. It leverages the economics and flexibility of Internet access (as compared to static MPLS) and the mobility supported by 4G LTE. SD-WAN must also provide robust security to offset the limitations of the Internet, authenticate mobile devices, and protect often unsecure IoT devices. Cloud-enabled security combined with SD-WAN offers a robust solution to meet emerging network requirements. Cloud-enabled security can speed communications to and from trusted cloud locations while monitoring flows for anomalous traffic for malware. Cloud-enabled security can provide the virtual perimeter for mobile devices and IoT sensors. Branch Reliance on Cloud/SaaS Applications Digital transformation is changing many organizations' IT strategy by requiring the management of multiple on-premises (data center) and off-premises (cloud) resources. The typical large organization now has multiple data centers and multiple public cloud infrastructure partners (including AWS, Microsoft and Google). They require the flexibility to create applications in any location (public and private); migrate the applications as necessary; and, of course, provide secure access for all their customers (employees) to those applications.

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