ICOMB functions as a framework for Mennonite Brethren conferences (national associations of congregations) worldwide to relate as peers rather than as mission churches under the structure of MBMS International.
In 2005 the term "committee" was officially changed to "community" by the conference representatives assembled at ICOMB's annual leadership summit in Japan.
In 2005, Victor Wall, president and representative of the Paraguay-German Mennonite Brethren Conference, was chosen to be the first Executive Secretary of ICOMB.
He had resigned from his position as Executive Director of the Canadian Conference of Mennonite Brethren Churches in 2010.
Membership ICOMB members are national associations of Mennonite Brethren churches, also known as conferences.