Managing the WAN traditionally has been one of the most expensive and rigid aspects of running the enterprise network. The use of business critical, cloud-based applications also continue to increase. Organizations with a distributed Infrastructure of remote offices and expanding remote workforce are switching from static, performance-inhibited wide-area networks (WANs) to software-defined WAN(SD-WAN) architectures.
SD-WAN eases that burden by making use of programmable network devices that you can manage remotely and through dynamic best-path routing, which improves cost, agility, and performance. SD-WAN is able to respond proactively to real-time network conditions.
Traditional WANs may utilize SLA-backed private multiprotocol label switching (MPLS) or leased line links to organizations’ main data centers for all application and security needs that comes at a premium price for connectivity. While this legacy hub-andspoke, architecture provides centralized protection, it increases latency and slows down network performance to distributed cloud services for application access and compute. Operational complexity and limited visibility associated with multiple point products add significant management overhead and difficulties while trying to troubleshoot and resolve issues.

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