Summa is a Turkish international contracting firm renowned for its diverse portfolio of large-scale projects, particularly in Africa, Eastern Europe, and the Americas. Founded in 1989, the company specializes in turnkey construction, from design to execution, across various sectors including hotels, convention centers, and residential complexes. In aviation, Summa has strategically evolved from a constructor to a key operator through Build-Operate-Transfer (BOT) and public-private partnership models. 

Summa operates Blaise Diagne International Airport in Senegal as part of the LAS consortium, the Freetown International Airport in Sierra Leone, and Diori Hamani International Airport in Niger. The firm has also undertaken the development and modernization of Osvaldo Vieira International Airport in Guinea-Bissau and recently broke ground on a major upgrade for Luano International Airport in the Democratic Republic of Congo.