Of course, exhortations from the CEO are only a fraction of what it takes to create real culture change, especially in a huge, very successful organization like Microsoft. An organizational culture is not something that can simply unfreeze, change, and then refreeze in an ideal way. It takes deliberate work, and it takes some specific ideas about what the culture should become. It also requires dramatic, concrete actions that seize the attention of team members and push them out of their familiar comfort zones.