How to get a Business/Partner Development Job at Amazon?

I've heard that the only way to truly get a job at Amazon is via referrals. I want to work for Amazon in a business development role, but does anyone have any insight on how to approach this if I don't have a referral? I am also looking into Partner Development, Partner Sales, or Vendor Management roles. #e-commerce #amazon #amazonreferral #amazonrecruiter #amazonhiring #businessdevelopment #amazonsales #amazonvendor #amazonpartner #partnerdevelopment #vendormanagement