Which of these entities could be transferred between AWS regions?

An EBS volume can be attached to more than one instance at a time.

Would an AWS user be billed for their primary Elastic IP attached to an EC2 instance?

What should be set up to move files from S3 to Glacier automatically?

How can you rewrite URLs with ELB?

From where does CloudFront deliver your content?

When using AWS for research and development ahead of a planned migration, how do you prevent unexpected increases or spikes in the billing?

Which AWS service can be used to help generate the documentation required by various compliance standards, such as Payment Card Industry Data Security Standard (PCI DSS) Level 1 for the handling of credit card data?

What in-memory caching server is not supported by ElastiCache?

When using an ECS cluster with EC2 instances, what maintenance tasks should you perform on the EC2s?

What does it cost to launch an EC2 instance from the AWS Marketplace?