To deploy an OpenEdge REST application to a Web server, you use the publish functionality in the Servers view of Progress Developer Studio.
Before you publish, you can use Progress Developer Studio to deploy a REST Manager to the target Web server. Publish a REST Manager only if you intend to use RESTMAN or OEM/OEE to manage your OpenEdge REST applications. For security reasons, you can do without the REST Manager deployment. For example, you probably would not deploy REST Manager on a Web server running in a network's DMZ.