@Sridevi Kaup Ambari 2.4.2 is the most stable release as of today. This is a maintainenance release of Ambari 2.4.0. Ambari 2.4.0 added the following features: Version Definition File (AMBARI-15636) Audit Logging (AMBARI-15241) Ambari Management Packs (AMBARI-14682) Dynamic Stack Extensions (AMBARI-12885) Stack Featurization (AMBARI-13363) Spark2 Service (AMBARI-16753) Ambari Infra Service (AMBARI-17822) Zeppelin Service (AMBARI-15265) Logsearch Service - Beta Release (AMBARI-15139) ... View more

If you are trying to build AMS artifacts here is useful links: https://cwiki.apache.org/confluence/display/AMBARI/Build+Instructions General build instructions are on this page: https://cwiki.apache.org/confluence/display/AMBARI/Ambari+Development ... View more