How to deploy a JBoss EAP application to a PaaS cloud environment?

Thanks in advance for your help. I am looking for some guide to migrate an on-premise JBoss EAP application to the cloud, specifically to a PaaS environment.

I have seen some documentation provided by Azure about the migration to their PaaS environment - Here's the link.

Can you help me understand:

1. What are the components deployed in the architecture for APP Service mentioned in the link above?
2. As far sa you know, how does it work with other similar PaaS environment, such as Google App Engine or AWS Beanstalk?

Thanks