Twitter-server defines a template from which servers at Twitter are built. Twitter-server ensures that common components like an administrative HTTP server, tracing, stats, etc. are wired in correctly for production use at Twitter.
Twitter-server is published with Maven:
<dependency>
<groupId>com.twitter</groupId>
<artifactId>twitter-server</artifactId>
<version>1.0.1</version>
</dependency>
or, with sbt:
libraryDependencies += "com.twitter" %% "twitter-server" % "1.0.1"