Objective and starting point
By the end of this lesson, justify a cloud arrangement from a business constraint and name an obligation that remains with the customer. No technical prerequisite is required. Begin with an observable outcome: release a customer service sooner, process an irregular workload within a deadline, or reduce time spent maintaining infrastructure. “Move to the cloud” describes an action; it does not say whether that action creates value. Specify a baseline, a target, and a limitation before choosing a service.
Separate a benefit from its conditions
Cloud services make computing capabilities available without requiring every customer to build and operate the underlying physical infrastructure. Consumption can follow demand, but the business must still connect that capability to its workload. A short processing peak creates a reason to examine adjustable capacity; it does not prove that every component will cost less. Include retained storage, migration effort, operations, and required service levels in the comparison. Likewise, a managed service can reduce an infrastructure task without deciding which employees may access business data.
Two questions that should stay separate
First distinguish deployment arrangements: a public cloud is operated by a third-party provider, a private cloud serves one organization, and a hybrid cloud combines public and private environments. A locally hosted system is not automatically a private cloud. Ask where the workload and its dependencies must operate. A company might retain a local system while connecting a new cloud application to it. Treat connectivity, data movement, and ownership of both sides as design constraints. Then ask which service responsibilities the company wants to retain. Infrastructure as a service provides infrastructure while leaving substantial software operation to the customer. Platform as a service moves more platform operation to the provider so the team can concentrate on applications. Software as a service provides a finished application. These labels describe different responsibility boundaries; they do not by themselves settle location, suitability, or compliance.
Worked example
Fictional teaching case: a regional arts organization opens ticket sales for a festival twice each year. Its target is to launch a reservation service in eight weeks. The existing finance system must remain locally hosted during this phase, and the team has application developers but little time for server maintenance. Step one: distinguish the new reservation service from the finance dependency; moving everything is outside the stated goal. Step two: investigate a managed application platform for the new service because reducing platform operations supports the delivery constraint. Step three: plan the connection and reconciliation with finance, and assign an owner to each. Step four: test demand handling, access rules, and the business transaction before expanding. This supports evaluating a mixed local and cloud arrangement; it does not establish a final architecture or a guaranteed saving.
Challenge the strongest alternative
Running the new application on virtual machines could preserve more operating-system control. That alternative becomes stronger if the application requires a specific OS configuration that the managed platform cannot support. In the original case, such a requirement was not stated, so do not invent it to justify infrastructure work. Conversely, a finished reservation product could reduce application development if its workflow meets the organization’s requirements. Compare actual fit rather than assuming custom development is always necessary. The recurring mistake is treating a cloud label as an answer before reading the constraint.
Transfer check
Try without copying the example: a training company needs ordinary staff email in four weeks and has no requirement for custom mail software. Which responsibility boundary should it investigate first, and what customer obligation remains? Check: investigate software as a service because the goal is a finished business application with little infrastructure operation. The company still decides who receives accounts and which access policies protect its data. Next, use the four retrieval cards for this unit, then the service-decision guide to challenge a changed constraint. Subsequent lessons examine service models and location choices in more detail.
Try it, then explain it.
Complete a short set without looking at the example. After each answer, explain which evidence or rule supports your decision and why the alternatives do not fit.
Sources & authorship
Original OpenExam explanations and examples. References support the concepts; they are not the source of copied questions. Independent educator review is pending.
Shared responsibilities and shared fate on Google Cloud | Cloud Architecture Center | Google Cloud DocumentationWhat is Cloud Computing? | Google Cloud