The framework has been created by COI to help deliver communications effectively to the diverse range of target audiences the government and public sector are trying to reach.
Trevor Robinson, a founder and creative director at Quiet Storm and co-chair of the IPA's ethnic diversity group, said: "Gaining a place on the COI framework has been an ambition since Quiet Storm was started.
"Everyone here is delighted with the win but also to be placed on the framework which has such a crucial role to play in modern day Britain."