Answer: 3-year, All Upfront, Standard RI

## Explanation The **3-year, All Upfront, Standard RI** provides the highest average cost savings compared to an On-Demand Instance for the following reasons: ### Key Factors Affecting RI Cost Savings: 1. **Duration**: - **3-year RIs** offer greater discounts than 1-year RIs because AWS provides higher savings for longer commitments - Longer commitment = higher discount percentage 2. **Payment Option**: - **All Upfront** payment provides the maximum discount compared to No Upfront or Partial Upfront options - Paying all upfront eliminates the hourly rate entirely, resulting in the lowest effective hourly cost 3. **RI Type**: - **Standard RIs** offer higher discounts than **Convertible RIs** - Convertible RIs provide flexibility (ability to change instance families) but at the cost of lower discounts - Standard RIs provide the maximum discount but with less flexibility ### Comparison of Options: - **3-year, All Upfront, Standard RI**: Combines all three factors for maximum savings (longest duration + highest payment discount + highest RI type discount) - **1-year, All Upfront, Convertible RI**: Shorter duration and lower RI type discount - **1-year, No Upfront, Standard RI**: Shorter duration and lower payment discount - **3-year, No Upfront, Convertible RI**: Lower payment discount and lower RI type discount ### AWS Pricing Strategy: AWS incentivizes longer commitments and larger upfront payments with progressively higher discounts, making the 3-year All Upfront Standard RI the most cost-effective option for predictable workloads.

Author: Ritesh Yadav