Winning the argument about open source in a commercial organisation

Open source and web technologies have conquered an incredible amount of business-to-business and business-to-customer communications.  Almost all startups are implemented with pure cloud infrastructure.  Stubbornly holding out are large organisations and their internal communications -- despite the outstanding flexibility, time-to-market, and low costs of these systems.  Our Drupal-based project is just getting started, having spent some months in the planning; our talk will cover its inception and the many barriers to adoption for our firm, a leading supplier of industrial-scale solar power technology.