AWS Certified Cloud Practitioner

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.