Large Group Intervention. Most early OD activities involved small groups and focused on incremental change. However, in recent years there has been growing interest in the application of OD techniques to large group settings, which are more attuned to bringing about radical or transformation change in organizations operating in complex environments. The large group intervention approach, sometimes referred to as “whole system in the room, brings together participants from all parts of the organization often including key stakeholders from outside the organization as well-in an off-site setting to discuss problems or opportunities and plan for change. A large group intervention might involve 50 to 500 people and last for several days. For example, the global furniture retailer IKEA used the large-group intervention approach to completely re-conceptualize how the company operates. During 18 hours of meetings held over several days, 52 stakeholders created a new system for product design, manufacturing, and distribution, which involved cutting layers of hierarchy and decentralizing the organization. All of the departments that had information, resources, or an interest in the design outcome worked together to create and implement the new system