Chapter 2: Understanding the Modular Zscaler Architecture
In this chapter, we will introduce the modular and highly available architecture of Zscaler. Both Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) use the same core Zscaler infrastructure, the only difference being the interaction of the various components for their specific purpose. The focus here will be the ZIA architecture, but the ZPA architecture is covered in detail in Chapter 7, Introducing ZTNA with Zscaler Private Access (ZPA).
Zscaler has several clouds and has been adding more, as dictated by customer demand. Each Zscaler cloud consists of the Central Authority (CA); Zscaler Public Service Edges (PSEs), previously called Zscaler Enforcement Nodes (or ZENs); and ...
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