There are a lot of people in the field who think facilitators are the possessers of a set of techniques and skills that can be numbered and looked up in a book. Many companies determine one official problem-solving model and then assign people to sit in the back of the room holding the team to it as the official process.
True facilitation is different.
It is a wisdom about group process, which when applied to team meetings, can transform the whole organization. When people confront issues in a way that elicit the best in people, it is transforming to the person and the organization. I believe that the key to success is the capability of the facilitators. They should know what a high quality conversation is, and be able to assure it in teams, either by standing in front of meetings and facilitating directly, coaching, training, or through individual conversations. Since there is always an immune response to one who elicits and sustains transformation process, facilitators usually need to be protected by having their own organization.