 According to the ABCD Institute, however, ABCD methodology recognizes that systemic injustice may require disadvantaged communities to seek assistance from outside the community.ABCD maintains that interventions from exterior sources will be most effective when a community’s assets are leveraged at full capacity.ABCD is described as a more sustainable model of community development than needs-based community development, because needs-based approaches may perpetuate community problems by emphasizing deficiencies and the necessity for reliance on outside assistance.