Official development assistance (ODA) is defined by the OECD Development Assistance Committee (DAC) as government aid that promotes and specifically targets the economic development and welfare of developing countries.
Most ODA is biateral, meaning that its state donor is identifiable at the point of delivery to intended beneficiaries. Multilateral ODA, on the other hand, is aid given into a pool administered by some intermediate organisation, so that the delivered aid is no longer attributable to a particular original state donor.