The second edition has recently been released in a collaboration between The African Union Commission, United Nations Economic Commission for Africa and the African Development Bank.
ARII uses sixteen indicators, grouped into five dimensions, to measure how well each country and region in Africa is integrated with its neighbours. The indicators are grouped into 5 areas: Trade Integration, Productive Integration, Macroeconomic Integration, Infrastructural Integration (includes Internet) and Free Movement of People.
It is possible to consult rankings, country and regional trade bloc files. The data can be download for the second and 2016 edition.