What does 'Impact' imply according to United Nations Organization ?

As per the United Nations Organisation, 'Impact' implies changes in people's lives. This might include change in their knowledge, skills, behavior, the way health & education conditions are changing across community. Such changes may be negative or positive, small or huge in quantum, it can be either long term or short term and may be identifiable or non-identifiable. These changes can be economic, socio-culture, institutional, environmental or of any other type.