Facilitation is the design and management of a group process. A facilitator is not the expert who gives answers, but the person who designs the conditions so the group can think well, surface what matters, work through differences, and reach decisions it can act on.
It's most useful when the stakes are high, the topic is complex, or the group has struggled to move forward on its own. A well-facilitated session produces a valuable output abd builds shared understanding and commitment in the process.
As an IAF member, I work to the standards and ethics of professional facilitation: neutrality on content, full attention to process, and a clear distinction between my role as facilitator and the group's role as decision-makers.