Today’s most commonly used branch office WAN architecture was initially implemented around the turn of the century. This architecture is based on the use of MPLS for connectivity and the presence of high-priced, hardware-based appliances at each end of a WAN link to provide functionality such as optimization and security. Unfortunately, because of the engineering required to deploy a new circuit, MPLS is not only an expensive service but it also involves long lead times. That may have been tolerable in the pre-iPhone business environment of the early 2000s, but in today’s fast-paced, super-connected world it’s no longer acceptable.
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