Ambari Architecture: https://issues.apache.org/jira/secure/attachment/12559939/Ambari_Architecture.pdf
Ambari Server-Agent Registration Flow: http://www.slideshare.net/hortonworks/ambari-agentregistrationflow-17041261
Ambari Local Repository Setup: http://www.slideshare.net/hortonworks/ambari-using-a-local-repository
API Documentation: https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/index.md
Technology Stack: Technology Stack
Integration: http://developer.teradata.com/viewpoint/articles/viewpoint-integration-with-apache-ambari-for-hadoop-monitoring