AWS Boston events coming soon

Here are some event that are happening in Boston the week of April 21:

Register today for the AWS Cloud Roadshow Series for SLED.

https://ww2.eventrebels.com/er/Registration/StepRegInfo.jsp?ActivityID=10424&StepNumber=1

AWS AwSome Day Boston :  free, one-day event 

Traffic costs between EC2 instances, AZs, and VPCs

Often times when running on AWS you will have multiple AZs, accounts and VPCs.  This is a simple summary of EC2 data transfer costs:

1. Within the same AZ  : Free: It is within the same AZ and over private IP.
2. Between two AZs :   Cost. Will incur inter-az charges for both inbound and outbound

3. Between Accounts in different VPCs :  Cost. Inter-az charges are applicable for data transfer charges between instances in the different AZ's (same region) and in different accounts.
4. Between one EC2 classic instance and VPC EC2 instance in a same AZ : Cost
5. Instances to S3 in the same region: Free
6. Instance to S3 in different region: Cost. cross region charges