AZ-900 - Describe Cloud Concepts - Section 1.2

Describe the benefits of using cloud services including availability, scalability, reliability, security, and manageability.

Describe the core benefits of cloud services - high availability, scalability, reliability and predictability, security and governance, and manageability - and explain what each means in practice. Distinguish vertical from horizontal scalability, and recognise that reliability encompasses redundancy and resiliency across geographic regions.

high availabilityscalabilityreliability and predictabilitysecurity and governancemanageability in the cloud

Practice question for this objective

Free sampleDescribe Cloud Conceptsmedium

A team forecasts the resources their workload needs to deliver a positive customer experience, relying on autoscaling, load balancing, and high availability to meet shifting demand. Which cloud benefit are they applying?

  • APerformance predictability, forecasting the resources demand needs Correct
  • BCost predictability, forecasting future spend before it is incurred
  • CReliability, recovering from failures to continue functioning
  • DGovernance, ensuring resources meet standards and stay compliant
Performance predictability forecasts the resources needed for a good experience using autoscaling, load balancing, and high availability. Performance predictability is the benefit of forecasting the resources a workload needs to give a positive experience, and it is delivered through autoscaling to add capacity on demand, load balancing to spread load, and high availability.

Why A is correct: Correct. Performance predictability is the benefit of forecasting the resources a workload needs to give a positive experience, and it is delivered through autoscaling to add capacity on demand, load balancing to spread load, and high availability.

Why B is wrong: Cost predictability is a real benefit, but it forecasts spending rather than the resources required for a good experience, so it does not fit a scenario driven by autoscaling and load balancing.

Why C is wrong: Reliability is a genuine pillar, but it addresses recovering after failures rather than forecasting the resources needed for performance, so it misses the forward-looking demand focus here.

Why D is wrong: Governance is a valid benefit, but it keeps deployed resources within technical and regulatory standards rather than forecasting capacity for performance, so it is the wrong category.

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