Laser additive manufacturing (LAM) continues to face substantial quality control challenges, especially in safety-critical industries such as aerospace, where defective parts often exhibit issues like dimensional inaccuracies, porosity, lack of fusion, and balling. These defects critically compromise geometric accuracy, mechanical performance, and structural integrity. There is a growing consensus that robust and high-fidelity measurement systems are essential to establish quantitative correlations between real-time process signatures and final part quality. Through accurate and timely measurement, closed-loop control can be implemented to ensure consistent and reproducible production outcomes.