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AWS Certified Solutions Architect Associate SAA-C03 Practice Question

A company needs to enhance their web application performance by increasing the hardware specifications (CPU, RAM) of their existing servers. Which type of scaling are they implementing?

Elastic scaling.
Vertical scaling.
Horizontal scaling.
Asynchronous scaling.

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Answer Description

Vertical scaling involves increasing the capacity of a single element of the architecture e.g. EC2 instance, by adding more resources, such as CPU, memory, or storage, to improve performance. This is often referred to as "scaling up". Horizontal scaling, or "scaling out" involves adding more instances to distribute the load across multiple points. Elastic scaling refers to the automatic adjustment of computing resources in response to changing demand. Asynchronous scaling is not standardized term within scaling strategies. However, it can refer to a situation where the system adjusts its resources without waiting for a specific event to complete or without requiring immediate, real-time triggers.

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