cloud computing - Amazon EC2 migration from one region to the other

I'm using the following Amazon EC2 resources in the US East (Virginia) region:

1. 1 Running Instance


2. 1 Elastic IP


3. 2 EBS Volumes


4. 100 EBS Snapshots


5. 1 Key Pair


6. 2 Security Groups



7. 5 My Own AMIs (customized based on
   my application stack)

My instance is based on Linux distribution (CentOS) and my AMIs are S3-backed. Both EBS volumes are mounted on this running instance.

We're planning to migrate our deployment to US-West region. Because Amazon EC2 resources are not shared across regions, my questions are:

1. What are all the factors that I need to consider in advance?



2. What are all the recommended & different ways of migrating each EC2 resources from one region to the other?


3. Are there any hidden risks involved during and/or after the migration?

Experts ideas/suggestions/recommendations on this are highly appreciated.