Introducing the Zscaler cloud architecture
Let's get started with an overview of how the Zscaler cloud is architected to be modular and highly available, which is nowadays a bare-minimum necessity for enterprises.
When an enterprise is provisioned on a Zscaler cloud, they get an instance on that Zscaler cloud. The enterprise administrator then proceeds to customize and configure their security policies and controls in the assigned cloud instance. This configuration includes users, groups, departments, and a collection of management policies and settings. This information is used by the Zscaler component to act on the user traffic and enforce the policies.
The aforementioned configuration resides in the Zscaler cloud CA, which is the core that has the intelligence to manage the entire cloud. It is also the same engine that supplies the necessary information to other Zscaler cloud components to perform their functions. The CA is not just one server somewhere in the cloud;...