Final answer:
Scalability in AWS means that the platform can handle increased load by expanding resources as needed. The service maintains performance during traffic surges, matching the demand without the need for restructuring. The correct answer is option (D).
Step-by-step explanation:
When Amazon Web Services (AWS) is described as being scalable, it refers to its ability to increase or decrease resources and services used based on the demand or workload. This means that as an enterprise, start-up, or public sector business grows or experiences peaks in traffic, AWS can adjust to handle the increased load without compromising performance or requiring a complete overhaul of its infrastructure.
In the context of the options provided, Choice D ('It continues operating when experiencing traffic surges.') relates most directly to scalability, although the concept also implies potential for expansion without significant new investment, encompassing aspects of other choices as well. However, for the sake of clarity and directly answering the student's question, scalability is about maintaining performance and service quality even as the number of users or amount of data processed increases.