KLA Corporation is a leading American technology company headquartered in Milpitas, California, specializing in wafer fabrication equipment for the semiconductor and nanoelectronics industries. It provides comprehensive process control and yield management systems, including advanced defect inspection, metrology, in situ monitoring, chemistry control, software solutions, and etch and deposition tools, supporting all phases from research and development to high-volume manufacturing of wafers, reticles, integrated circuits, and packaging. Formed in 1997 through the merger of KLA Instruments and Tencor Instruments, the company has grown via strategic acquisitions, enhancing capabilities in optical inspection, computational lithography, and automated optical systems, and rebranded to KLA Corporation in 2019. KLA's solutions enable production of diverse devices like advanced logic, 3D NAND memory, power devices, RF communications, LEDs, photonics, and MEMS, improving chip quality, accelerating development cycles, and boosting profitability for manufacturers. With a global footprint across 18 regions, approximately 15,000 employees, and significant R&D investment, KLA plays a pivotal role at the intersection of electron/photon optics, sensors, and AI, driving innovations in automotive, mobile, data centers, AI, advanced packaging, and IoT sectors. Its technology ensures high yields in complex fabs where defects smaller than 10 nanometers can compromise functionality, underpinning virtually every modern electronic device from smartphones to autonomous vehicles.