📖 What is Cloud Service Customer (CSC)?
A Cloud Service Customer (CSC) is an organization or individual that consumes cloud services provided by a CSP. Depending on the service model (IaaS, PaaS, SaaS), the CSC is responsible for various security layers, primarily the security in the cloud.
"The CSC's responsibility is highest in IaaS and lowest in SaaS. Keep this inverse relationship in mind when analyzing responsibility scenarios."
📚 Certification: CCSP (CCSP)
🔑 What are the Key Concepts of Cloud Service Customer (CSC)?
- ▸ The CSC operates under the Shared Responsibility Model, focusing on 'security in the cloud' while the CSP manages the 'security of the cloud' infrastructure.
- ▸ In IaaS models, the CSC holds the highest responsibility, managing the guest operating system, application software, and all data stored within the environment.
- ▸ For PaaS deployments, the CSC is primarily responsible for the security of the applications they develop and the data they input into the platform.
- ▸ In SaaS environments, the CSC's responsibility is minimal, focusing mainly on identity and access management, data classification, and specific application configuration settings.
- ▸ The CSC must perform due diligence and continuous monitoring to ensure the CSP adheres to the agreed-upon security controls and regulatory compliance requirements.
🎯 How does Cloud Service Customer (CSC) appear on the CCSP Exam?
A scenario might describe a company migrating to a SaaS platform and ask you to identify which security controls remain the CSC's responsibility, such as user access and data governance.
You may be asked to determine who is responsible for patching a guest operating system in an IaaS environment following a vulnerability report, testing your knowledge of the responsibility matrix.
Expect questions where you must distinguish between the CSP's role in securing the physical hypervisor and the CSC's role in configuring virtual network security groups to protect their assets.
❓ Frequently Asked Questions
Does the CSC's responsibility change if they use a managed service?
Yes. Managed services shift more operational burden to the CSP, but the CSC always retains ultimate ownership of their data and the responsibility for managing access permissions and user identities.
Can a CSC delegate their security responsibilities to a third party?
While a CSC can hire a managed security service provider (MSSP) to perform technical tasks, the ultimate legal and regulatory accountability for the data remains with the CSC.