Software Defined Networking

Software Defined Networking

Software-defined networking (SDN) is an approach to networking that uses software-based controllers or application programming interfaces (APIs) to communicate with underlying hardware infrastructure and direct traffic on a network.


SDLAN or software-defined local area networking is an emerging technological concept that aims to extend the principles behind SDN and NFV to the “access” or “edge” layer of the enterprise network. The access layer is where users, guests, devices and machines connect to a company’s secure corporate network


SD-WAN is an acronym for software-defined networking (SDN) in a wide area network (WAN). SD-WAN simplifies the management and operation of a WAN by decoupling the networking hardware from its control mechanism. This concept is similar to how software-defined networking implements virtualization technology to improve data centermanagement and operation.

A key application of SD-WAN is to allow companies to build higher-performance WANs using lower-cost and commercially available Internet access, enabling businesses to partially or wholly replace more expensive private WAN connection technologies such as MPLS.


Software-defined data center (SDDC; also: virtual data center, VDC) is a marketing term that extends virtualization concepts such as abstraction, pooling, and automation to all data center resources and services to achieve IT as a service (ITaaS).[1] In a software-defined data center, “all elements of the infrastructure — networking, storage, CPU and security – are virtualized and delivered as a service.”[2] While ITaaS may represent an outcome of SDDC, SDDC is differently cast[by whom?] toward integrators and datacenter builders rather than toward tenants. Software awareness in the infrastructure is not visible to tenants.