Large apps are refactored to allow work on already refactored apps by other people. Small apps are already manageable.

The following apps are large:

• cwl_execution
• gate_connection
• heliport

Refactoring means introducing the following structures:

• Extracting use cases into its own layer https://medium.com/@jairvercosa/business-logic-in-django-projects-7fe700db9b0a
• Extracting common ways of handling data into model managers and models
• Program against interfaces and intend to configure which implementation to use in settings.py if more than one implementation exists in the future
• Adding configurability in settings.py whenever it makes sense