A city's CAD reporting fleet runs the same EC2 instance size 24/7 year-round with predictable CPU. Which purchasing approach most improves compute cost efficiency?
Select an answer to reveal the explanation.
Short Explanation
If those CAD boxes never sleep, On-Demand is paying retail every hour. Lock in Savings Plans or Reserved Instances for the steady baseline—Spot is for interruptible work, not a 24/7 reporting core.
Full Explanation
Steady, always-on EC2 workloads are classic candidates for Savings Plans or Reserved Instances, which discount committed usage versus On-Demand. Spot suits fault-tolerant, interruptible jobs and is a poor sole strategy for continuous CAD reporting. Dedicated Hosts address licensing/tenancy needs, not the default cost path, and upsizing On-Demand increases spend.