FYI: Unlike America's other tech giants, Amazon doesn't have a traditional campus. The 45,000 or so employees and executives in Seattle, out of 575,000 worldwide, fan across numerous high-rises downtown and in the South Lake Union neighborhood. Amazon's "headquarters" defaults to where Jeff Bezos, the company's founder and CEO, happens to be, currently Day 1 Tower. Its name comes from a perpetual Bezos maxim: that, relatively, we're still at "day one" of the internet—and, by extension, that Amazon is just getting started.
Regards,
Ted
https://www.forbes.com/sites/randalllane/2018/08/30/bezos-unbound-exclusive-interview-with-the-amazon-founder-on-what-he-plans-to-conquer-next/