The document discusses the evolution of IT from centralized systems controlled by vendors to more open and social systems. It describes how user needs and expectations changed, driving demand for more consumer-like applications in the enterprise. Systems of engagement emerged to meet this demand. Content became more diverse and social features like collaboration and sharing became important. The boundaries between systems of record and systems of engagement blurred as both were needed. Open source, cloud computing, and social aspects became more prominent. Alfresco is positioned as an open source social content management platform to address these trends.