Solid oxide cells (SOCs), including solid oxide fuel cells and solid oxide electrolysis cells, have been developed worldwide for the last decades via continuous improvement in materials, cell design, and manufacturing processing, resulting in current high-level technical growth. Commercializing traditional SOC technology, however, has been still delayed due to various limits such as the high cost of cell components, unreliable sealing materials, sensitivity of the cell to failure due to thermal/mechanical shocks or fuel electrode oxidation, and manufacturing issues. Fuel electrode-supported SOCs are typically considered as the state of the art design. The optimization of fuel electrode microstructure can be one of critical parameters to develop high performance SOCs through minimizing the effectiveness of concentration polarization. Also, SOCs have technical limitations resulting from the utilization of a brittle materials, leading to unpredictable failures. Considering as a next generation SOCs, metal supported SOCs can overcome these technical limits with valuable benefits such as low material cost, great mechanical properties, and manufacturability. However, it is still challenging to develop the porous metal supports for metal supported SOCs. Here, we discuss the microstructural effectiveness of fuel electrode on the SOCs for fuel cell and electrolysis cell operations, fabrication processing to produce porous metal supports, and metal supported SOCs for electrochemical CO₂ reduction.