Always Check AWS Reservation Pricing Before Choosing Instance Types

​If you're making decisions on AWS instance types—whether for RDS, EC2, or anything else—don't assume Reserved Instance (RI) discounts are proportional across families.
I recently ran into an unexpected pricing quirk:

• On-Demand pricing for db.r7g and db.r6g is nearly identical.
• But a 1-year No Upfront RI on db.r7g had a significantly lower discount than db.r6g.

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Most who have been working with AWS for a long time assume the latest generation instances are the obvious choice--newer, faster, same price… but that assumption can cost you.
Key Takeaways:

• Always double-check RI pricing before making a decision.
  
• The most cost-effective option isn't always the newest instance family.
  
• AWS pricing has nuances, and small oversights can lead to significant cost differences.
  

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Have You Noticed Pricing Inconsistencies?
Have you run into any surprising RI pricing differences? Let’s compare notes. Join the conversation over on LinkedIn, or connect with me directly on my LinkedIn page to explore how we can help your team make smarter AWS infrastructure decisions and optimize costs effectively.