Authored by the United Nations and cited in the Introductions (footnote: Page iv), the official 'United Nations Sustainable Development Goals' web page presents the authoritative 17 SDGs and their targets and is included because it supplies the global policy framework, common definitions and measurable targets investors need to align portfolios with sustainability and development priorities; this source underpins the book’s discussion of how to evaluate alignment, measure impact, and design reporting and engagement strategies that map financial decisions to internationally agreed development goals.