The image shows Workload Expansion creates separate Workload compartments each time you run the stack. It shows a tenancy in the root compartment (level 0) containing a parent compartment comprising the Enterprise Scale Baseline Landing Zone in level 1. This level 1 compartment itself contains two level 2 Common Infra compartments:

• The first level 2 compartment allows tagging. This compartment contains two level 3 compartments, one for security, the other for networks. This compartments allow tagging.
• The other level 2 compartment contains three level 3 compartments, each for the application workload (workloads A, B, and C). These level 3 compartments can be tagged, although the parent level 2 compartment cannot. Within each level 3 compartment, alerts can generate notification emails with the respective compartment.