Indonesia Development Forum 2020. The Indonesia Development Forum (IDF) is a platform for Indonesian leaders in government, private sector, academia, and other members of society to collaborate to shape Indonesia''s development agendas. This platform is initiated by Bappenas.. the, indonesia, development, forum, idf, is, a, platform, for, indonesian, leaders, in, government, private, sector, academia, and, other, members, of, society, to, collaborate, to, shape, indonesias, development, agendas, this, platform, is, initiated, by, bappenas