Summary
Here are the main topics covered in this chapter:
This chapter first provided a description of software-defined networking (SDN) and software-defined wide area networks (SD-WAN).
This chapter next covered emerging technology of Virtual Extensible Local Area Networks (VXLAN). After describing the Layer 2 encapsulation that makes this technology function, this section described the common use case of the data center interconnect (DCI) functionality.
This chapter then examined the emerging technology of the zero trust architecture (ZTA), including its major components of policy-based authentication, authorization, and least privilege access.
This chapter defined the Secure Access Secure Edge (SASE) and Security Service Edge (SSE) solutions.
This chapter covered the concept of infrastructure as code (IaC) and emphasized the features of IaC that rely on automation. This section of the chapter also discussed how source control can be critical to the IaC environment.
The characteristics of IPv6 were highlighted, including the IPv6 address format and IPv6 data flows (unicast, multicast, and anycast).