Shared Responsibility Model for Cloud Service Models

Overall, cloud security can be daunting, but the shared responsibility model provides some clarity. It outlines who is accountable for what when it comes to security, reliability, and resiliency in IaaS, PaaS, and SaaS cloud services. Table 4.1 shows the responsibility in each model:

Iaas	Paas	SaaS
With IaaS, the cloud provider takes care of securing data centers, networks, and hardware.	In the PaaS model, the cloud provider secures the platform—from operating systems to middleware and runtime components—on your behalf.	With SaaS, the cloud provider takes care of everything—infrastructure, platform, and apps.
You are ultimately responsible for safeguarding your operating systems, applications, and data; maintaining...