Design engineers are paying close attention to materials. It’s not just about the routing anymore. Keshav Amla and Tarun Amla are founder and CEO and cofounder and CTO, respectively, of Avishtech, a San Jose, CA-based developer of simulation and design software, specifically stack-up and 2D field solvers.  They discuss how their signature software enables better board design and how it came to be endorsed by Lee Ritchey, one of the leading experts in signal integrity and PCB design.