It's very easy to use, and it's blazing fast. The best thing about Logic Apps is actually its ability to create a solution in a matter of hours. It doesn't need any kind of provisioning, and you don't need any kind of hardware. You can create very small elements like these Logic Apps, and you can build a whole solution from those very simple and small elements.
I also like that they are completely incorporated with your existing active directory. You can use user groups directly from the active directory inside Azure and access it from the Logic Apps.
You don't need to do anything special, and you just have access. You can just check if the user is, for example, allowed to do some action. Normally it would take you some additional steps and some additional calls to check it. You have to come back to the active directory to make this possible. In Logic Apps, you just have it, and you can use it.
I think that there's this concept of logging and recall to the Logic App. It shows you every single step, every single product, and the result it's returning to the next step. It also has an amazing debugging feature.
You can rerun some calls and see if, after a correction of the Logic App, for example, you get the correct results. So, it's almost like it's alive. It's like you make a change, poof it, and it's in production, and it's working. The speed of the composition of the problem and creating a real solution for it is extremely fast with this solution. It's extremely fast in creation.