The implementation of solution was divided into various phases keeping multi-cloud implementation approach in mind. Service cloud implementation with Email, Phone (CTI Integration), Web Cases, Live Chat, Knowledge base, entitlement management & data migration from Zendesk to Service cloud. Once all the service implementation were completed a single BU setup for Marketing cloud with integration to Service cloud was done to ensure that all the important information from Service cloud flows to Marketing cloud to plan the campaign execution. An integration from Commerce cloud to Service cloud ensured that Order information is available for Service reps and integration to OMS to have reps update the data as needed.