EIA (Environmental Impact Assessment) is the process of identifying and evaluating the effects on the environmental of impact factors arising from a praposal change in environmental quality. 

SIA supplements the financial and specialized models that describe the reasoning of numerous improvement experts and organizations. SIA can be attempted in various settings and for various purposes. This makes challenges in characterizing or assessing it. The idea of a SIA done for a global enterprise as a feature of that company interior strategies might be altogether different to a SIA embraced by a specialist in consistence with administrative or subsidizing organization necessities, or a SIA embraced by an improvement organization keen on guaranteeing best incentive for their country advancement help.