o The lack of legal frameworks, the impression of greater costs associated with sustainable investments, and the requirement for standardised criteria to quantify sustainability are some of the obstacles that face the implementation of sustainable finance initiatives.**Impact Investing**: Projects tackling problems like renewable energy, affordable housing, and healthcare are receiving funding as investors look for financial rewards that are accompanied by a beneficial social or environmental impact.**Green Bonds and Sustainability-linked Loans**: These financial instruments incentivize businesses to enhance their environmental practices by raising funding for projects with positive environmental effects and tying loan terms to sustainability performance metrics.Trend of sustainable finance : o 1.2.3.