The Israeli startup Retym, established in 2021, raised $75 million at a $500 million valuation, bringing total funding to $180 million in four years.The fourth round was led by Spark Capital, who joined the third round investors Fidelity, Kleiner Perkins, Mayfield Fund, and the company Alif Semiconductor.With investment exceeding $180 million to date, Retym specializes in programmable coherent DSP (digital signal processing) solutions for cloud and AI infrastructure, a foundational technology that enables faster and more efficient transmission within and between AI data centers. Retym's founders Sachin Gandhi and Dr. Aharon El-Bahar unite top analog, DSP, VLSI and optical communications experts with seasoned, visionary investors to build exceptional products that will transform AI infrastructure.The company offers innovative solutions that enhance the performance of optical networks through DSP and analog design innovation, deep learning and AI integration. Retym's products are designed to be low power, interoperable and compact to meet the evolving demands of next-generation data centers.