@caleb@dice.camp just yesterday I was listening to the Bike Shed podcast, and they were talking about exactly that pattern: https://www.bikeshed.fm/358 I've been working with that pattern for a while, and it's good, the testing/mocking area is perfectly aligned and testable. When is time to integrate multiple Decrees I tend to propose evolve that pattern to include the Do-notation and we are going great at this point. Some other very similar is what TrailBrazer framework does with their Operations.