IT professionals want to apply the same level of security to their cloud deployments as they do to internal resources. Cloud security is one of the most important issues when implementing cloud projects. Cloud providers are more accountable for securing the transition between IaaS to SaaS, while the user assumes more responsibility in the IAAS model. In PaaS and Paa S models, the cloud provider manages the entire infrastructure, including middleware components such as databases. The application and data content comes from the cloud consumer, the author says.”]
Source: https://securityintelligence.com/who-is-responsible-for-cloud-security/