A successful cross border integration start with due diligence which then feeds into the integration strategy and execution. In general, in order of importance the key activities include the regulatory/legal due diligence and risk mitigation, independent financial due diligence and integration necessary for the closing/reconciliation processes, go to market strategy validation and implementation, and HR/cultural assessment and gap remediation. Once those four pillars are analyzed and addressed, then the other workstreams can fall into place.
