Relatively little known outside of the SAP Retail Industry the CAR is a key piece of architecture for the retailer and brings “under one roof” a range of different functions that solve perennial business challenges. We’ll write a couple of different posts on CAR topics based on our recent implementation experiences………

More information can be found here:

https://blogs.sap.com/2017/01/24/new-sap-customer-activity-repository-for-sap-s4hana-retail-rapid-deployment-solution-available/