Windows Server 2012 R2 Innovations

Storage transformation – Delivers breakthrough performance at a fraction of the cost.

Software defined networking – Provides new levels of agility and flexibility.
 
Virtualization and live migration – Provides an integrated and high-performance virtualization platform.

Access & Information Protection – Empowering your users to be productive while maintaining control and security of corporate information with Windows Server 2012 R2.

Java application monitoring – Enables deep application insight into Java applications.

More information can be found here;