Difference between Standalone vs. Domain mode clustering in EAP 6/7

Issue

• Which mode Standalone or Domain is better for Clustering JBoss EAP 6 instances.
• Which use cases are appropriate for domain mode and which are appropriate for standalone mode?
• Should I use standalone or domain mode?
• Is it advantage to run the server in domain mode or can I use the standalone mode for simplicity?
• Is it recommend to use multiple nodes of standalone mode or domain mode?
• Is it possible to support the single deployment to multi-nodes on standalone clustering or else do we need to manually copy the content to cluster members in standalone clustering