Table of Contents
Question
A company needs the ability to acquire resources when the resources are needed. The company also needs the ability to release the resources when the resources are no longer needed.
Which AWS concept represents the company’s goals?
A. Scalability
B. Sustainability
C. Elasticity
D. Operational excellence
Answer
C. Elasticity
Explanation
The correct answer is C. Elasticity. Elasticity is the ability of a system to automatically scale up or down the resources as needed, based on the demand or workload. This allows the system to optimize the performance and cost efficiency, as well as to handle unpredictable or variable workloads. AWS provides various services and features that enable elasticity, such as Auto Scaling, Elastic Load Balancing, Amazon EC2, Amazon S3, and AWS Lambda.
Scalability is the ability of a system to handle an increase in the workload by adding more resources or improving the efficiency of the existing resources. Scalability can be achieved by either horizontal scaling (adding more servers) or vertical scaling (adding more capacity to a server). Scalability is related to elasticity, but it is not the same concept. Scalability focuses on the capacity and performance of the system, while elasticity focuses on the flexibility and adaptability of the system.
Sustainability is the ability of a system to meet the current and future needs of the environment, society, and economy without compromising the quality or availability of the resources. Sustainability is a broader concept that encompasses not only the technical aspects of the system, but also the social and ethical aspects. AWS supports sustainability by providing services and features that help customers reduce their environmental impact, such as AWS CloudFormation, AWS Trusted Advisor, AWS Cost Explorer, and AWS Carbon Calculator.
Operational excellence is the ability of a system to deliver value to customers by continuously improving the quality and efficiency of the processes, products, and services. Operational excellence is one of the pillars of the AWS Well-Architected Framework, which provides best practices and guidance for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud. AWS supports operational excellence by providing services and features that help customers monitor, automate, audit, and optimize their systems, such as Amazon CloudWatch, AWS CloudTrail, AWS Config, and AWS Systems Manager
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