AWS Availability Zones: Usage Charges
We are charged a small bandwidth charge (Regional Data Transfer) for data that crosses Availability Zones. Regional Data Transfer rates apply if at least one of the following is true, but is only charged once for a given instance even if both are true:
· The other instance is in a different availability zone, regardless of which type of address is used.
- Data transferred between instances in the same availability zone on EC2 costs $0.00 per GB.
- Data transferred between instances across different availability zones on EC2 costs $0.01 per GB.
· Public or Elastic IP addresses are used, regardless of which zone the other instance is in.
Also Data transfer between VPC and non-VPC instances in the same Region, regardless of Availability Zone, is charged at the usual rate of $0.01 per Gigabyte
Other Related Articles :
(Full Article) Exploring Amazon Availability Zones
Part 8: (AZ Series) Availability Zones : Simple Latency Test
Part 7: (AZ Series) AWS Availability Zones Usage charges
Part 6: (AZ Series) Guidelines for architecting applications across AWS Availability Zones
Part 5:(AZ Series) Availability Zone Names are logical names
Part 4: (AZ Series) How Amazon VPC uses Availability zones
Part 3: (AZ Series) How AWS Building blocks inherently leverage Availability Zones?
Part 2: (AZ Series) Why we should leverage AWS Availability Zones?
Part 1: (AZ Series) What is AWS Availability Zone ?