Cloud Digital Leader Why Cloud Technology Can Transform Business Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Cost optimisation

  Why it's wrong here

  Cost optimisation is a cloud architecture pillar focused on maximising spending efficiency, for example by right-sizing virtual machines, using committed use discounts, or selecting lower-cost storage tiers. Achieving the lowest cost does not inherently place content closer to users, and a decision to reduce latency is not primarily a financial decision. A globally distributed CDN may actually add cost, but the business requirement of serving users worldwide with low latency outweighs that trade-off. Therefore, cost optimisation does not explain the need for a CDN.

• ✗

  Scalability

  Why it's wrong here

  Scalability addresses the ability to handle increased load, typically through techniques like vertical resizing, horizontal autoscaling, or load balancing across replicated instances. Even a highly scalable system can have all its origin servers concentrated in a single region, which means users on other continents still experience high latency due to physical distance. While a CDN can also help offload traffic, the core problem of geographic distribution is not solved by scaling alone. Thus scalability is not the correct pillar because it deals with volume of requests, not user geolocation.

• ✗

  Agility

  Why it's wrong here

  Agility, in the cloud context, refers to the speed of provisioning resources and deploying updates, such as using infrastructure-as-code, CI/CD pipelines, and serverless functions to shorten release cycles. Being able to spin up new environments quickly says nothing about where those environments are located or how close their content is to end users. A highly agile organisation could still have all its compute capacity in one region, yielding slow content delivery for global audiences. Hence agility is a development-speed advantage, not a geographic-coverage advantage.

• ✓

  Global reach

  Why this is correct

  Global reach is the Google Cloud architectural pillar that specifically ensures content and services are delivered with low latency and high availability wherever users are located. By using a content delivery network (CDN) like Cloud CDN, content is cached at edge points of presence (PoPs) around the world so that users are served from a nearby node rather than a distant origin server. This reduces round-trip time and improves the digital experience for a multinational corporation's global user base. Therefore, global reach directly matches the requirement of serving content to users worldwide with low latency.

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