This guide was developed through close collaboration between the 2050 Pathways Platform and the Deep Decarbonization Pathways Initiative (DDP) at IDDRI. In order to help countries achieve alignment of short-term plans with the long-term systemic transformations needed to meet the goals of the Paris Climate Agreement, it provides a practical framework based on the premise that countries can fully understand how their NDCs align with the Paris Agreement only by viewing alignment through the lens of a Long-Term Low Emission Development Strategy (LT-LEDS), which can highlight transformations and actions that might be overlooked in a short-term perspective, expanding the scope of the alignment process. It also also includes four country case studies (Chile, European Union, Morocco, India) presenting real examples of alignment.