Before you begin developing OpenEdge REST applications, you should make some decisions regarding:
The AppServer or AppServers that will run the ABL business logic required by your REST application. AppServers running in the state-free mode are recommended.
The Web server or servers where you intend to deploy your REST application. OpenEdge REST applications must be deployed in a Java Servlet container on a Web server.
The new or existing AppServer procedures and classes that you need to implement REST services for your application. You also need to determine the input and output parameters that you will map as REST resources.
The structure of the URI namespace that you will create to expose REST resources
The AppServer or AppServers that will run the ABL business logic required by your REST application. AppServers running in the state-free mode are recommended.