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Difficulty: EasyShared Responsibility Model

A customer support department hosts its ticketing portal on Azure App Service, which is a Platform as a Service (PaaS) offering. The department decides to migrate the portal to a Software as a Service (SaaS) CRM platform. Under the Azure shared responsibility model, which responsibility shifts from the customer to the cloud provider as a result of this migration?

  1. Maintenance of the application software and codebaseAnswer
  2. B
    Patching and security of the host operating system
  3. C
    Classification and protection of stored customer data
  4. D
    Physical security of the hosting datacenter

Answer

Maintenance of the application software and codebase
In Platform as a Service (PaaS), the customer is responsible for developing, deploying, and maintaining their own application code, while the cloud provider manages the underlying platform infrastructure. When migrating to Software as a Service (SaaS), the cloud provider manages the entire application, shifting the responsibility of application software maintenance and code updates from the customer to the provider.

Step-by-Step Solution

1
Identify the service models in the scenario
The scenario describes a transition from Platform as a Service (PaaS) using Azure App Service to Software as a Service (SaaS) using a CRM platform.
Understanding the baseline and target service models is necessary to evaluate the responsibilities assigned to the customer and the provider in each.
2
Determine which responsibility shifts from the customer to the provider
In PaaS, the customer must manage the application code, whereas in SaaS, the provider manages the entire application. Host OS patching and physical security are already managed by the provider in PaaS, and data governance always remains with the customer.
Comparing the responsibility matrix between PaaS and SaaS shows that application software maintenance is the only responsibility that shifts from customer to provider.

Key Concept

Shared Responsibility Model
Estimated Time:45s
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Topics

Shared Responsibility Model

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