Virtualization technologies enable cloud computing to become a real and scalable service offering due to the savings, sharing, and allocations of resources across multiple tenants and environments.

Functions: There are three things we can do with a given datum:
. Read, View/read the data, including creating, copying, file transfers, dissemination, and other exchanges of information.
* Process. Perform a transaction on the data; update it; use it in a business processing transaction, etc.
. Store, Hold the data (in a file, database, etc.).

Following are the characteristics of IaaS service model of cloud computing:
1. Scale
2. Converged network and IT capacity pool
3. Self-service and on-demand capacity
4. High reliability and resilience

SLA is correct answer here. Operational Level Agreements(0LA) refers to agreements that are done between business units within the organisation. Standard Operating procedure(SOP)as the name suggest refers to procedural document to conduct an activity/process. Statement of Applicability(SOA) is alS027001 compliance document which list all the relevant security controls applied to the organisation.

GRC and data is responsibility of the customer in all service models according to shared responsibility model.