(written from a Production point of view)
A diehard Trekkie, Bezos is the founder of aerospace company Blue Origin and is also a major investor in Wikia, Memory Alpha's hosting company.  He is reportedly the fourth-richest man in the world.
Bezos played Star Trek games as a child and has installed a model of the USS Enterprise at the headquarters of his aeronautical and space research firm, Blue Origin.  He also claims that Amazon's voice recognition program called "Alexa" was partially inspired by Star Trek's interactive ship computers.
To the set of Beyond, Bezos arrived with a number of bodyguards. Chris Pine confessed that he did not recognize Bezos but realized that he was someone of importance.