Freezing Groups of customers to compare as time goes on?
So in our data we have an Activation Date for each customer. There are also a number of potential different status' for each customer So what we are trying to do is freeze customers in groups and then compare our most current data against them.
For example: if 1000 customers had an Activation date of January 2015, could we freeze that silo of customers. Then somehow show the current status to see how many were still "Active", "Suspended", "Inactive" etc.