Magnesium based alloys offer unique opportunities for lightweight structural and biomedical applications via additive manufacturing (A/M) because of their low density, biocompatibility and biodegradability. However, A/M of magnesium alloys is in early stages of development with very few reported studies. These feasibility studies have attempted mainly to study the processing behavior of magnesium powders, and identified challenges due to material and powder characteristics. In this study, an Elektron®MAP+43 alloy powder was investigated using both directed energy deposition and a powder bed process. Using the directed deposition process, builds up to 15.24 cm x 5.08 cm x 1.27 cm were fabricated by optimizing parameters such as laser power, scan speed, and chamber oxygen to minimize porosity and produce desirable build microstructures. Mechanical testing and metallographic samples were extracted and tested from selected orientations. A powder bed process was also investigated to develop parameters, optimize microstructure and scan strategies for building cylindrical samples so that tensile specimens could be machined and tested. The effects of heat treatment and hot isostatic pressing on directed laser deposited parts are also discussed. The results of this study are used to explore pathways for potential commercialization of magnesium alloy powders for additive manufacturing.