AWS Certified Cloud Practitioner
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A company wants to migrate to the AWS Cloud. The company needs the ability to acquire resources when the resources are necessary. The company also needs the ability to release those resources when the resources are no longer necessary.
Which architecture concept of the AWS Cloud meets these requirements?
Real Exam
Community
RRitesh
0
A
Elasticity
B
Availability
C
Reliability
D
Durability
Explanation:
Explanation
Elasticity is the correct answer because it refers to the ability to automatically scale computing resources up or down based on demand. This concept allows organizations to:
- Acquire resources when needed - Scale out to handle increased workloads
- Release resources when no longer needed - Scale in to reduce costs when demand decreases
Key AWS services that enable elasticity:
- Amazon EC2 Auto Scaling - Automatically adjusts the number of EC2 instances
- AWS Auto Scaling - Unified scaling across multiple AWS services
- Elastic Load Balancing - Distributes traffic across multiple instances
Why the other options are incorrect:
- Availability (B): Refers to the ability of a system to remain operational and accessible. It's about uptime and redundancy, not resource scaling.
- Reliability (C): Refers to a system's ability to recover from failures and continue functioning. It's about fault tolerance and disaster recovery.
- Durability (D): Refers to the long-term protection of data, ensuring it doesn't get lost or corrupted over time.
Real-world example: An e-commerce website that needs more servers during holiday sales (scale out) and fewer servers during regular periods (scale in) demonstrates elasticity.
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