Solaris Cluster is high availability software that integrates applications and ensures they continue running during outages or failures. It monitors systems, storage, and networks and fails over applications and data to other nodes. The presentation discusses new features in Solaris Cluster 3.2 like an intuitive command line interface, simplified configuration for applications like Oracle RAC, and live upgrades that minimize downtime. It also covers the Solaris Cluster Geographic Edition, which provides disaster recovery across unlimited distances, and licensing models for Solaris Cluster.