Rational Team Concert 2.x has a single, monolithic WAR file that has the Jazz Platform and Rational Team Concert application. Other related products such as Rational Quality Manager (RQM) and Rational Requirements Composer (RRC) also followed the same architecture, which led to longer download times and large file sizes. With Rational Team Concert 3.0, the product functionality is decomposed into the Jazz Team Server (JTS) and Change and Configuration Management (CCM) application.
A Jazz Team Server provides basic services that enable a group of applications to work together as a single logical server. The following domain-specific applications are defined as a part of the new architecture: