Control Group in AJO Journey

Description -

In the context of reporting, the control group holds significant importance.

Why is this feature important to you -

It is an important marketing KPI in reporting

How would you like the feature to work -

We want to compare the same target group/audience who fulfill the same criteria. Then we will compare the contacted vs not contacted customers by sales Kpi. That not contacted customers will be flagged and frozen in the control group. 

Current Behaviour -

It is not available at all for Journeys. I've come across several posts where Adobe has mentioned that this feature is currently unavailable.