Which EC2 instance purchasing solution will meet the company’s requirements MOST cost-effectively?
Use Spot Instances for the production EC2 instances. Use Reserved Instances for the development and test EC2 instances.
Use Reserved Instances for the production EC2 instances. Use On-Demand Instances for the development and test EC2 instances.
Use Spot blocks for the production EC2 instances. Use Reserved Instances for the development and test EC2 instances.
Use On-Demand Instances for the production EC2 instances. Use Spot blocks for the development and test EC2 instances.
Explanations:
Spot Instances are not suitable for production workloads due to their potential interruptions. Therefore, using Spot Instances for production would not meet the reliability required, despite potentially lower costs.
Using Reserved Instances for production ensures cost savings due to their long-term commitment, while On-Demand Instances for development and test environments provides flexibility, especially since these instances are not needed continuously.
Spot blocks offer some guaranteed availability but are not ideal for production due to the risk of interruption. Reserved Instances for development and test environments do provide savings, but the production aspect is compromised.
Using On-Demand Instances for production can be costly, and while Spot blocks can save costs in development and test environments, they are not a guaranteed option due to potential interruptions, which is not suitable for these environments.