The Tuscany SCA Java runtime can run inside a webapp (a WAR) and expose services when the webapp is started. In order for this to work a number of things have to be in place in the webapp: 1. The Tuscany runtime jars have to be packaed in the webapp WEB-INF/lib directory 2. The Tuscany HTTP filter servlet has to be configured in the WEB-INF/web.xml file using something like: tuscany org.apache.tuscany.sca.host.webapp.TuscanyServletFilter tuscany /* 3. The composite application has to packaged in the WAR file. When the TuscanyServletFilter started it effectvely reads its own WAR file as the contribution. As an alternative you can package complete contribution archives in the WEB-INF/sca-contributions directory. In the getting-started/helloworl-webapp sample we provided a Maven build script that perform these WAR packaging steps. To execute a webapp based contributions (sample contributions that have webapp at the end of their name) you can build the contribution using maven and then copy the resulting war file to your web container of choice For example, for learning-more/binding-jsonrpc/contribution-calculator-webapp, do the following cd learning-more/binding-jsonrpc/contribution-calculator-webapp mvn cp target/sample-contribution-binding-jsonrpc-calculator-webapp.war your_container_deployment-dir As an alternative sample webapp based contributions can be run within Jetty directly from Maven, look for webapp contributions that have the following configuration in their pom.xml file: org.mortbay.jetty maven-jetty-plugin 6.1.18 For contributions that have this, for example, learning-more/binding-jsonrpc/contribution-calculator-webapp, do the following cd learning-more/binding-jsonrpc/contribution-calculator-webapp mvn jetty:run This will launch the contribution in the Jetty runtime and then wait. At this point you can use HTTP clients to send messages to services that the running SCA applcation exposes. For this example try pointing your browser at: http://localhost:8080/sample-contribution-binding-jsonrpc-calculator-webapp/