Hello @Ryan Abbey
Just adding some more insights on this question!
The Wait activity will be charged as per the Activity Count billing!
The Wait activity will not use any IR Resources and no DIU is consumed, so no billing on DIU!
For further clarification:
*Activity Runs are billed on 'count', Check the count of Total Activity Runs!!!
AND
*The Data Movement Activities are billed based on the DIU consumed by the IR(Integration Runtime)
Example: Below is the testing done to check the ADF pipeline consumption.
Test 1: Only 'Wait' activity for 1 hour, total 1 Activity , No Data Movement happened(No DIU consumed by the IR)
Test 2: Copy Activities + Wait Activities , The IR consumed few DIU, because we used CopyData activity!
