EBCs are an enabling technology for CMCs since EBC failure would result in a rapid failure of CMC components. EBC technology, therefore, will significantly enhance NASA missions, i.e. develop and demonstrate revolutionary technologies that enable global air transportation that is safer, more efficient, and more environmentally friendly for the next 30 years and beyond. Detailed understanding of failure mechanisms and lifing of the EBCs are needed to ensure the success of CMC components in service. Accurate thermal mapping is of paramount importance for EBC lifing via rig and engine test. Currently no thermal mapping technology is available at T>1400oC and the feasibility of EBC thermal mapping technology at T<1400oC has not been demonstrated. Thermal history coating, with its capability to map thermal history potentially up to 1700oC, will be a game-changing technology for EBC lifing. Other potential commercial applications include CFD analysis and engine test. CFD analysts need to know accurate component temperatures to validate CFD analysis and thereby enhance the fidelity of CFD codes. Gas turbine designers and engineers need to know the temperatures at which the hot section components had operated in engine test. Accurate temperature measurements enable the specialists to determine if the engine is functioning within its design limits and whether it might run at a higher temperature and thus efficiency level. In addition, knowledge of accurate temperature of space components in extreme environments is needed for component lifing. CFD analysis is used to model the surface temperature. Thermal History Mapping Technology will provide accurate surface temperature data needed to validate CFD model. Examples of spacecraft components that will be benefited from the technology include: Ion Thruster – Space electric propulsion engines (e.g. Dawn); Thermal Protection System (TPS) – Re-entry heat shields; and, Thermal Control Surfaces – High temperature radiators for in-space nuclear-electric power and propulsion.