A Disaster Recovery as a Service (DRaaS) provider is responsible for system recovery procedures, including restoring systems and services in a disaster scenario. This is the core functionality of DRaaS. * Stakeholder Communications (Option B): This is typically managed internally by the organization to ensure alignment with its crisis management plan. * Validation of Recovered Data (Option C): The organization must verify data integrity to meet business requirements. * Maintaining Currency of Data (Option D): While DRaaS may handle data backups, the organization retains responsibility for ensuring the relevance of the data being backed up. Reference: ISACA CISA Review Manual, Job Practice Area 4: Protection of Information Assets.