AidData is a research lab at William & Mary. They equip policymakers and practitioners with better evidence to improve how sustainable development investments are targeted, monitored, and evaluated. They use rigorous methods, cutting-edge tools, and granular data to answer the question: who is doing what, where, for whom, and to what effect? They believe that the global community needs a stronger evidence base to find signal in the noise as they target sustainable development investments, coordinate efforts, and monitor progress towards the UN's Sustainable Development Goals (SDGs). Towards that end, their research agenda catalyzes innovation in data, methods, and tools to help partners through five program areas: (1) Tracking underreported financial flows from opaque public and private donors, lenders, and investors who publicly disclose little about their spending priorities and activities; (2) Geographic and demographic tracking and targeting of sustainable development investments to ensure no one is left behind; (3) Understanding the priorities and perspectives of leaders in low and middle income countries, and measuring the performance of external development partners with open-ended and close-ended feedback data; (4) Rigorously evaluating the impacts and cost effectiveness of specific interventions and large investment portfolios with spatial data; and (5) Creating high-resolution, high- frequency measures of development outcomes, powerful spatial data integration and extraction infrastructure, and next-generation geospatial analysis tools.