Amazon is on a spending spree to grow its fleet of planes, vans, semitrucks and drivers in its latest move to compete with FedEx and UPS. Now, it’s using the added capacity to move cargo for outside customers, betting big on the business of third-party shipping while also shipping 72% of its own packages. CNBC talks to former Amazon executives and current customers using the shipping services to find out all about the behemoth’s next big move. » Subscribe to CNBC: https://cnb.cx/SubscribeCNBC » Subscribe to CNBC TV: https://cnb.cx/SubscribeCNBCtelevision » Subscribe to CNBC Classic: https://cnb.cx/SubscribeCNBCclassic About CNBC: From 'Wall Street' to 'Main Street' to award winning original documentaries and Reality TV series, CNBC has you covered. Experience special sneak peeks of your favorite shows, exclusive video and more. Connect with CNBC News Online Get the latest news: https://www.cnbc.com/ Follow CNBC on LinkedIn: https://cnb.cx/LinkedInCNBC Follow CNBC News on Facebook: https://cnb.cx/LikeCNBC Follow CNBC News on Twitter: https://cnb.cx/FollowCNBC Follow CNBC News on Instagram: https://cnb.cx/InstagramCNBC Subscribe to CNBC PRO: https://cnb.cx/2NLi9AN #CNBC Amazon now ships for other merchants to compete with FedEx, UPS