There are not-smart questions though 
Let’s do an example, that migh help me grasp things.
Let’s say you’re away, the house alarm is set, and one of the windows is opened.
What’s the basic chain of events?
Window Sensor -> Alarm
Alarm -> SmartThing
SmartThing -> You
And then if code isn’t input,
Alarm -> Monitoring Service
Is that basically what happens?
Can you tell what doors/windows are opened via the smart thing app?