He has defeated other contenders like former Kenyan Prime Minister Raila Odinga and former Minister of Foreign Affairs in Madagascar Richard Randriamandrato.
The seasoned diplomat has vowed to drive transformation and ensure that Africa is placed on the African agenda.
He is going to succeed Chadian former Prime Minister Moussa Faki Mahamat who is stepping down.
After a ferocious battle with contenders, that once again showed sharp divisions in the African continent, Youssouf is going to face several challenges as the continent is battling with conflict in the Eastern Democratic Republic of Congo, civil war in Sudan, terrorism in the Sahel region, economic integration and climate change.
He has pledged to push for reforms within the AU, ensure that there is accountability and promote the bloc as a formidable organisation to champion the interests of Africans.
Meanwhile, Angolan President Joao Lourenco is the new chairperson of the AU, a position that rotates among the heads of state.
--SABC--