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Domain 01 · 25–30% of Exam

Describe Cloud Concepts

Cloud models, service types, shared responsibility, and the core characteristics of cloud computing

25–30%Exam Weight
15Sub-topics
HighPriority
Practice Tests →
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The Cloud Concepts domain is pure definition and classification — it tests whether you can correctly describe what cloud is, how it is structured, and what the service models mean. It accounts for 25–30% of the exam. The table below maps every official sub-topic to the type of question you will face on it in the exam.

What the Exam Tests
Sub-domain / TopicWhat kind of question to expect
Define cloud computing
  • Questions test whether you can identify which characteristics correctly define the public cloud — you need to know which properties are fundamental to cloud computing and which are not, selecting all that apply from a mixed list.
  • Questions test whether you can match a description of a cloud behaviour or outcome to the correct benefit term — you need to understand the precise meaning of each benefit term well enough to distinguish between them when given a one-line scenario.
  • Questions test whether you understand what is and is not required to manage cloud services — you need to know which access methods are sufficient and which additional tools or installations are not necessary.
  • Questions test whether you understand how the cost of increasing capacity in the cloud compares to doing the same on-premises — you need to know how the two models differ in terms of investment required to scale.
  • Questions test how cloud computing compares to on-premises deployments across multiple dimensions — you need to understand the differences in capital expenditure, configuration flexibility, and the ability to scale in response to business change.
  • Questions test understanding of which costs are expected when migrating a workload to Azure — you need to know which charges are part of normal cloud operations and which are not mandatory or automatic when adopting Azure services.
  • Questions present a multi-select list and ask you to identify the genuine benefits of cloud computing — you need to know which items are real advantages and be able to reject statements about administrative complexity and configuration parity that are common misconceptions.
  • Questions use true/false format to test whether you understand a fundamental mechanism of cloud computing — specifically that cloud providers use virtualisation to serve multiple customers simultaneously from shared underlying infrastructure.
Shared responsibility model
  • Questions test whether you understand how responsibility is divided between the customer and the cloud provider across the three service models — you need to know which areas each party owns and how that division shifts as you move between IaaS, PaaS, and SaaS.
  • Questions test responsibility at a more granular level — you need to know which specific areas remain the customer's responsibility in each model, which are fully managed by the provider, and which are shared.
  • Questions present all three service models and ask you to rank them in order of decreasing customer responsibility — you need to know the correct ordering and understand what drives the differences between each model.
Public cloud
  • Questions test whether you can identify the defining characteristics of the public cloud model and distinguish them from properties that belong to private or on-premises environments.
  • Questions test whether you understand who can access resources in a public cloud — you need to know the access model and be able to reject misconceptions about restrictions on who can use or access resources in a public cloud environment.
Private cloud
  • Questions test whether you understand what makes a private cloud distinct — particularly around who owns and controls the resources, security posture, and underlying infrastructure.
  • Questions test specific assumptions about what a private cloud requires — you need to know which technical conditions are and are not mandatory for a private cloud deployment.
Hybrid cloud
  • Questions test whether you can identify the hybrid model by its defining characteristic and understand what flexibility it gives organisations over workload placement.
  • Questions present a scenario where on-premises and cloud-hosted resources are connected and working together, and ask you to identify which cloud model it represents.
  • Questions test the components and prerequisites of a hybrid cloud — you need to know whether the public cloud is always a component, whether an internal network is required, and what a hybrid model enables an organisation to do with its existing infrastructure.
Consumption-based model & cloud pricing
  • Questions test whether you understand the distinction between capital expenditure and operational expenditure in a cloud context — you need to know which model applies when organisations provision or scale cloud resources.
  • Questions test whether you can classify real-world expenditure types into the correct category — you need to know which kinds of spending are considered capital expenditure and which are operational.
  • Questions use true/false format to test whether you understand the CapEx impact of moving to a public cloud — you need to know that using a public cloud reduces or eliminates capital expenditure because infrastructure costs shift to an operational model.
Serverless
  • Questions test whether you can identify which Azure service is an example of serverless computing — you need to know that Azure Functions is the serverless offering and be able to distinguish it from IaaS compute services, storage services, and dedicated hosting options that require infrastructure management.
IaaS — Infrastructure as a Service
  • Questions test whether you can correctly classify Azure services as IaaS and understand the implications — you need to know that combining an IaaS service with a PaaS service does not make a solution fully PaaS.
  • Questions test what the customer remains responsible for when using IaaS — you need to understand which management tasks are not handled by the provider in this model.
  • Questions present a multi-requirement scenario with specific constraints per application, and ask which service model applies to each — you need to reason from requirements about OS access and management overhead to the correct model.
  • Questions test which service model is appropriate for a lift-and-shift migration — you need to know which model preserves the existing server configuration with minimal change and be able to distinguish it from models that abstract infrastructure.
  • Questions test what additional infrastructure resources are required when deploying a VM — you need to know which dependent resources are mandatory and be able to distinguish them from optional components.
  • Questions give the name of a specific Azure service and ask which service model it belongs to — you need to be able to classify named services into the correct model.
PaaS — Platform as a Service
  • Questions present a scenario with a PaaS-only constraint and ask which combination of Azure services satisfies it — you need to be able to classify individual services and identify which pairings are fully PaaS.
  • Questions test which cloud service model minimises management overhead for the customer — you need to understand the ordering of customer responsibility across all three models.
  • Questions test whether you can classify specific named Azure services into the correct service model — you need to know which services are PaaS offerings and what the provider manages on the customer's behalf in that model.
  • Questions present a multi-requirement scenario and ask which service model best fits an application where OS management must be minimised but code modification is still required — you need to identify the right model based on the combination of constraints given.
  • Questions give the name of a specific Azure service and ask which service model it belongs to — you need to be able to correctly classify it and distinguish it from IaaS and SaaS alternatives.
SaaS — Software as a Service
  • Questions test which service model reduces customer management responsibility the most, and what responsibilities remain shared between the customer and the provider.
  • Questions test which specific area of responsibility is shared in SaaS — you need to know what the customer still owns in this model and what is handled entirely by the provider.
  • Questions ask what the customer provides or remains responsible for in a SaaS model — you need to understand which aspect of the service the customer contributes when everything else is managed by the provider, and be able to classify specific products into the SaaS model.
  • Questions give the name of a specific product and ask which service model it belongs to — you need to be able to identify SaaS products and distinguish them from PaaS and IaaS offerings.
High availability & scalability
  • Questions give a description of a cloud outcome and ask you to name the corresponding benefit — you need to know the precise definition of scalability and be able to distinguish it from other closely related benefit terms.
  • Questions test the distinction between horizontal and vertical scaling — you need to know what each type of scaling involves and be able to identify a given operational action as an example of one or the other.
  • Questions test whether you can identify high availability as the benefit that ensures a continuous user experience in the event of a resource failure — you need to distinguish it from reliability, scalability, and predictability, which are offered as alternatives.
  • Questions test scalability specifically in the context of dynamically increasing the resources of an existing compute unit — you need to understand this as distinct from adding new instances, and identify the correct benefit term for this type of capacity growth.
  • Questions use true/false format to test whether you can correctly assign specific scaling actions to the right scaling type — you need to know which operations constitute horizontal scaling versus vertical scaling and identify when a statement incorrectly labels one as the other.
Reliability & predictability
  • Questions test whether you can identify the correct term for a cloud service's ability to adapt quickly to changing requirements — you need to distinguish this from other benefit terms that describe availability, consistency, and performance.
  • Questions test whether you can identify the benefit term that describes ensuring access to resources when a service failure occurs — you need to distinguish this from scalability, predictability, and elasticity.
Elasticity
  • Questions test whether you can identify a real-world cloud behaviour as an example of elasticity — you need to know what elasticity means and be able to distinguish it from other benefit terms when given a concrete operational scenario.
  • Questions present a sentence-completion describing a cloud application's ability to dynamically allocate and release resources, and ask which benefit term applies — you need to distinguish elasticity from governance, reliability, and other closely related terms.
  • Questions present a real-world usage pattern with variable demand cycles and ask which cloud benefit addresses cost management for that type of pattern — you need to understand how elasticity connects to consumption-based cost efficiency.
  • Questions use true/false format to confirm that cloud computing provides elastic scalability — you need to recognise this as a fundamental cloud characteristic and know that the answer is affirmative.
Geo-distribution
  • Questions describe a scenario involving deploying applications across multiple regions to improve user experience, and ask you to identify the benefit term it represents — you need to know what geo-distribution means and distinguish it from other availability and performance terms.
  • Questions present a description of enabling resources to be deployed close to users and ask which cloud benefit this represents — you need to identify geo-distribution and distinguish it from elasticity, high availability, and scalability.

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