I am new to background task, According to msdn article the In-Process background task will executed in application process.Is In-process background task will trigger if the application is not running?
Is In-process background task will trigger if the application is not running?
Yes.
In-process background tasks are simpler to implement than out-of-process background tasks. However, they are less resilient. If the code running in an in-process background task crashes, it will take down your app.
Also note that DeviceUseTrigger, DeviceServicingTrigger and IoTStartupTask cannot be used with the in-process model. Activating a VoIP background task within your application is also not possible. These triggers and tasks are still supported using the out-of-process background task model.
Please check MSDN document for more details:Create and register an in-process background task