AWS Certified Cloud Practitioner
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A company has decided to adopt Amazon EC2 infrastructure and wants to scale various stateless services for short-term usage. Which EC2 pricing model is MOST cost-efficient to meet these requirements?
Real Exam
Community
RRitesh
A
Spot Instances
B
On-Demand Instances
C
Reserved Instances
D
Dedicated Hosts
Explanation:
Explanation
Spot Instances are the most cost-efficient option for this scenario because:
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Cost Savings: Spot Instances offer up to 90% discount compared to On-Demand pricing
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Short-term Usage: Perfect for workloads that can be interrupted and don't require continuous availability
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Stateless Services: Stateless applications can easily handle instance termination and restart on new instances
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Scaling: Ideal for scaling applications that can tolerate interruptions
Why other options are less suitable:
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On-Demand Instances: Most expensive option, pay by the hour with no long-term commitment
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Reserved Instances: Require 1-3 year commitment, better for predictable, steady-state workloads
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Dedicated Hosts: Most expensive option, physical servers dedicated to your use, not cost-effective for short-term scaling
For stateless services that can handle interruptions and need short-term scaling, Spot Instances provide the best balance of cost efficiency and flexibility.
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