The difference between the three is:
1. Different meanings
The organizer is the unit that hosts the event, the organizer is the unit that specifically handles the event, and the co organizer is the unit that assists in handling the event.
2. Different status
The organizer is the initiator and the nominal protagonist of the event. The organizer plays the role of implementing the scheme in the event, has a cooperative relationship with the organizer, and is employed by the organizer. The co sponsor mainly plays the role of auxiliary support or sponsorship.
3. Different aspects of responsibility
In general, if the organizer is responsible for planning and handling, the organizer expresses its authority and influence as a superior department or competent department, and the co organizer gives support to reduce costs.
In large-scale events such as conferences and forums, the organizer is the initiator and the nominal protagonist of the event, but the organizer often looks for some qualified and capable units as the specific work units, that is, the organizer. When the scale of the event is large or the required fee is high, the organizer will also bring in some supporting units, or pay for sponsorship and listing, or assist in handling listing. They are the co organizers.