Answer: 3-year All Upfront Reserved Instances

## Explanation For applications with **consistent usage** that are expected to run **indefinitely**, **3-year All Upfront Reserved Instances** provide the **most cost-effective** option because: - **Longer commitment = higher discount**: AWS provides the highest discounts for longer-term commitments (3-year vs 1-year) - **All Upfront = maximum savings**: Paying the entire amount upfront results in the lowest effective hourly rate compared to partial or no upfront options - **Consistent usage pattern**: Reserved Instances are designed specifically for predictable, steady-state workloads - **Indefinite operation**: The 3-year term aligns well with long-term operational needs, maximizing cost savings over time While 3-year No Upfront Reserved Instances offer flexibility, they provide lower discounts than All Upfront options. For truly indefinite operations, the 3-year All Upfront option delivers the best overall value.

Author: Ritesh Yadav