What is the primary tool used for writing nanosegmentation rules in Illumio?

The primary tool used for writing nanosegmentation rules in Illumio is the Policy Editor. This tool provides users with a comprehensive interface to create, manage, and modify policies effectively. It allows you to specify the access controls and segmentation rules that dictate how applications and workloads interact with each other within your network.

Using the Policy Editor, users can define various conditions and parameters that a workload must meet to be included in a particular segment. This interface is designed for ease of use, enabling individuals to visualize and manage complex rules without needing extensive coding experience.

While other tools like Rule Builder and Flow Analyzer serve specific functions in policy management—such as providing a simplified way to create rules or understanding the flow of traffic—they do not directly serve as the primary writing interface for nanosegmentation rules. The Policy Generator creates policies based on existing rulesets or configurations but is not the primary tool for crafting or writing those rules from scratch. Thus, the Policy Editor stands out as the essential tool for this purpose in Illumio.