When records are modified in Salesforce, the Cloudingo agent (which is 100% Force.com and sits inside Salesforce) looks at the filters setup inside the Cloudingo web portal. If Salesforce records are within the scope of the filters, the agent logic fires.
When you click on a group of duplicate records in the Cloudingo portal, Cloudingo makes a real-time API call to Salesforce to display the records side-by side. Once a merge takes place, the Cloudingo Web Portal calls the native Salesforce merge command. The actual data is not cached, so as soon as you move off the Cloudingo merge screen, information is released from the Cloudingo UI and only exists in Salesforce.