We have a Amazon RDS database in a different VPC and our EC2 servers in a different VPC but in the same region i.e. us-east-1
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Our servers connect to the RDS via it's publicly accessible endpoint. We are working on reducing our aws bills and we can see high data transfer cost.
Does connecting to RDS instance from an ec2 instance from a different VPC affect the data transfer cost as compared to connecting from the same VPC?
I couldn't find the answer from google or aws forums. Any information will be much appreciated.