This document provides an introduction and overview of the new features and capabilities of Oracle WebLogic Server 12c. It describes the focus on cloud computing for the 12c release. It also summarizes the basic differences between WLS 11g and 12c, such as the installation process, patching mechanisms, dynamic clusters, and other features around developer productivity, Exalogic optimizations, and high availability with RAC databases. Frequently asked questions are also addressed.