The Progress Application Server (PAS) is a platform that provides Web server support for Progress applications. Progress applications are packaged as Web application archives (WAR files) and deployed to the Java Servlet Container of a running instance of PAS. Client access to a PAS server is through HTTP/HTTPS protocols. Clients include (but are not limited to) browser-based applications and mobile apps.

PAS for OpenEdge is an application server based on the Apache Tomcat Web server and servlet container.

For more information on PAS for OpenEdge, see the Learn about PAS for OpenEdge.