diff --git a/factories/README.md b/factories/README.md
index 3bfbf777..f23e7990 100644
--- a/factories/README.md
+++ b/factories/README.md
@@ -30,6 +30,21 @@ secondary_ip_ranges:
 
 This configuration creates the `subnet-alpha-a` subnet, located in VPC `vpc-alpha`, inside project `project-prod-a`.
 
+All modules consume specialized `yaml` configurations - located on a well-defined directory structure that carries metadata. Let's observe an example from the [Example environments](example-environments/) directory:
+
+```yaml
+# ../example-environments/prod/conf/project-prod-a/vpc-alpha/subnet-alpha-a.yaml
+
+region: europe-west3
+ip_cidr_range: 10.0.0.0/24
+description: Sample Subnet in project project-prod-a, vpc-alpha
+secondary_ip_ranges:
+  secondary-range-a: 192.168.0.0/24
+  secondary-range-b: 192.168.1.0/24
+```
+
+This configuration creates the `subnet-alpha-a` subnet, located in VPC `vpc-alpha`, inside project `project-prod-a`.
+
 ## Rationale
 
 This approach is based on modules implementing the factory logic using Terraform code, and a set of directories having a well-defined, semantic structure holding the configuration for the resources in YaML syntax.