Amazon Web Services (AWS) lowers the prices of Reserved Instances along with introduction of “No upfront” payment option for 3 year standard RIs. Moreover AWS reduces the prices of M4 instance family (both On-demand & Reserved Instances). This is 61st price reduction by the AWS. All the changes are made effective immediately.
Here are the details :
1. New No Upfront Payment Option for 3 Year Standard RIs
2. Lower prices for No Upfront Reserved Instances by upto 17%
3. Lower Prices for Convertible Reserved Instances by upto 21%
4. Lower prices for M4 Instances by upto 7%
Reference : https://aws.amazon.com/blogs/aws/ec2-price-reductions-reserved-instances-m4-instances/