The legacy enterprise WAN was built for an era where applications were all hosted in one, or at most two data centers of the enterprise. The network connected all of the locations to the data center. We live in a world today where, a typical enterprise consumes a combination of applications that are hosted in its data center and in the public cloud like Amazon Web Services or Microsoft Azure, or simply as a software as a service (SaaS) that can be hosted anywhere in the world.
WAN does not recognize your SaaS
Branches exploding in numbers but are waiting on the WAN
WAN is a large source for Cloud policy breaches
WAN costs are not inline with order costs on cloud
The compute and the storage costs, have significantly reduced by moving to a pay as much you consume model. The WAN that connects the enterprise locations and the users in them to the applications, has been stuck in the old world. The legacy WAN was built for a world of client-server applications. While most of the applications have moved to the cloud, the cloud itself has become a center piece of the policy breaches that enterprise encounters today. The legacy WAN was not built to seamlessly extend it to the cloud, allowing the enterprise IT to extend the same policies that they have enforced on physical locations, be it branch offices or data center, to the virtual world in the cloud.
Enterprise expects its WAN to enable high speed consumption of applications, irrespective of where those applications are
and from where those applications are accessed. With the adoption of SaaS and Cloud growing at a rapid pace,
Enterprise requires more internet bandwidth rather than bandwidth to its data centers.
It requires high quality bandwidth at each location without the hassles of feasibility at those locations. It requires a SD-WAN that can mix the legacy world of MPLS that connected its locations to its data centers with internet at each location.
The enterprise needs to create a uniform network from multiple of types of bandwidth - private bandwidth in the form of a MPLS circuit or internet bandwidth, from any service provider.The enterprise IT also needs to enable uniform policies and governance across all physical and virtual locations, creating a SD-WAN that complies to the standards and policies.
It empowers the enterprise with the ability to increase the network bandwidth at a location or across locations
without having to go through the hassles of feasibility or the wait till the existing service provider increases the provisioned
capacity at a location. It enables the enterprise to use locally available bandwidth from multiple service providers –
giving it the leverage to use the best quality bandwidth at the lowest possible cost.
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