The document discusses how the IT landscape has changed due to trends like Moore's Law, server virtualization, cloud computing, and the evolution of integrated systems. It suggests these "mega trends" are driving infrastructure towards more integrated solutions from single vendors, rather than best-of-breed components from multiple vendors. While integrated systems may offer benefits like faster time to solution and lower risk, barriers to moving from existing heterogeneous environments include issues like application compatibility, existing infrastructure investments, and re-engineering processes.