What does a “Domain” refer to in Amazon SWF?
A security group in which only tasks inside can communicate with each other
A special type of worker
A collection of related Workflows
The DNS record for the Amazon SWF service
Domains provide a way of scoping Amazon SWF resources within your AWS account. All the
components of a workflow, such as the workflow type and activity types, must be specified to
be in a domain. It is possible to have more than one workflow in a domain; however,
workflows in different domains cannot interact with each other.