The Public Media Alliance started life as the Commonwealth Broadcasting Association (CBA), founded in February 1945 at an event called the Commonwealth Broadcasting Conference.
Held in London, the inaugural conference brought together representatives from several broadcasters that had cooperated closely in reporting World War II.
The CBA began with six members, and by 1974 had adopted a charter, and the membership met every two years in different parts of the Commonwealth. Membership was restricted to public service broadcasters in Commonwealth countries, but in 1995 it was broadened to allow commercial companies with a PSB commitment and PSBs from countries outside the Commonwealth to join as affiliates.
In 2014, the membership of the CBA unanimously voted for the organisation to become known as the Public Media Alliance, and to allow full and equal membership of PSBs from any country in the world.