In the PaaS (Platform as a Service) cloud service model, the cloud provider manages the infrastructure, including network, servers, operating systems, and storage. The organization's responsibility is primarily at the application level, which includes the data, interfaces, and the applications themselves. This means the organization must ensure the security and compliance of their data, manage the applications they develop or deploy, and handle the interfaces that connect their applications to other services or users. Reference: The Certified Network Defender (CND) course by EC-Council discusses the shared responsibility model in cloud services, emphasizing the division of responsibilities between the cloud provider and the consumer123.