On-demand network virtualization and provisioning services in SDN-driven cloud platforms
In this chapter, we present a brief survey on the latest advancements in Network-as-a-Service (NaaS) platforms based on the software-defined networking (SDN) model. This survey sheds light on the main advantages of network virtualization and programmability in cloud computing environments that led to the provisioning of dynamic, flexible, and secure virtual network services. In spite of the great benefits provided by network virtualization in the cloud, further research is still needed to tackle a plethora of technical challenges in the fields of dynamic NaaS configuration and operation. This chapter paves the way for a better understanding of the problems hindering the NaaS adoption in current cloud architectures and represents a call for action on the need for having a dynamic NaaS configuration service to tackle these problems. Accordingly, the chapter proposes the design and implementation of a centralized cloud service for creating virtual networks (VNets) in SDN-based cloud architectures.
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