Here’s a neat trick for AEM developers and architects: you can create a diagram representation of the service dependencies using Composum. For those not familiar, Composum is an Open-Source project based on Apache Sling.
To create a service dependency diagram, you will need to install two additional dependencies:
Composum Sling Core Console
Composum Sling Core Commons
Once you install the dependencies, you can access the Composum Service Graph web console at /system/console/servicegraph.