Big Tech CEOs Marc Benioff, Andy Jassy, Satya Nadella, Sundar Pichai, Mark Zuckerberg have all led their companies to conduct layoffs in the last few months as a downturn leads to a slowdown in spending.Kimberly White/Getty; Justin Sullivan/Getty Images; Mike Blake/Reuters; Elaine Thompson/AP; Mateusz Wlodarczyk/NurPhoto via Ge