The Results Framework (RF), a diagram of cause and effect logic, is a core element of all USAID Country Development Cooperation Strategies (CDCS’s). This Technical Note provides a general introduction and background on Results Frameworks. The Tech Note defines a Results Framework; identifies key considerations in developing a strong RF; and discusses the uses of the RF in strategic planning, project design, monitoring and evaluation and portfolio realignment. The relation between an RF and a LogFrame is discussed. Two Annexes provide key definitions related to Results Frameworks and discuss the relation between USAID’s Development Hypothesis/Results Framework approach and the concept of Theory of Change that is used by a number of other donors. This Note supplements the USAID Automated Directives System (ADS) Chapter 201 on Planning.