Funding Round attributes
AttoTude, a leader in terahertz (THz) interconnect technology for artificial intelligence (AI) and hyperscale data center applications, announced on March 31, 2025, the successful completion of a $50 million Series B funding round. The round was led by Mayfield, with participation from The Westly Group and existing investors Sutter Hill Ventures, Canaan Partners, and Wing Venture Capital. This investment brings AttoTude's total funding to $91 million, following a $30 million Series A in 2024 and an $11 million Seed round earlier that year.
AttoTude is transforming data center interconnects with the world's first THz interconnect over wire, significantly improving bandwidth, reliability, and energy efficiency at a leading cost structure. The company's THz platform fully meets the scale-up application without the use of photonics by leveraging standard ASIC manufacturing processes to communicate up to 40 meters.
The Series B funding will be utilized to scale manufacturing operations, expand customer engagements, and accelerate product development as AttoTude prepares for volume production. The company is currently collaborating with leading hyperscale and AI infrastructure companies on initial deployments.
AttoTude was founded by Dave Welch, former co-founder of Infinera and CTO/VP of Corporate Development at SDL, and Joy Laskar, founder of five startup companies and former professor at Georgia Institute of Technology. The company is headquartered in Menlo Park, California.
This substantial investment underscores the growing demand for advanced interconnect solutions in the rapidly evolving AI and data center sectors. AttoTude's innovative approach positions it to address critical challenges in data transmission, energy efficiency, and scalability, paving the way for enhanced performance in next-generation data centers.
