NEW YORK -- Amazon isn't content just being the "everything store." Increasingly, it looks like it wants to be its own deliveryman, too.

Its Monday announcement of a new air cargo hub in Kentucky is merely Amazon's latest foray into building out its own shipping and logistics unit. If successful, the move could ultimately mean lower costs for Amazon -- and possibly faster delivery and low prices for consumers. But it could also pit Amazon against package deliverers like FedEx and UPS.

Amazon has long plowed its profits back into its business investments. In order to speed up its delivery, it has invested in opening new distribution centres and leasing fleets of trucks. In May, Amazon leased 40 Boeing jets from Atlas Air Worldwide Holdings and Air Transport Services Group Inc., a fleet it dubbed "Prime Air."

The moves comes e-commerce continues to outpace retail sales. Amazon said Thursday the number of items it sold in the fourth quarter rose 24 per cent compared with a year ago. Its revenue rose 22 per cent to $43.74 billion, slightly missing analyst expectations.

Meanwhile, profit rose 36 per cent to $749 million, or $1.54 per share, ahead of expectations.

NEXT STEP

On Monday, Amazon took the next step, announcing plans to build a worldwide air cargo hub at a northern Kentucky airport about 13 miles southwest of Cincinnati. The nearly $1.5 billion investment is expected to create 2,700 jobs.

It's an auspicious location, since UPS has a big air hub in Louisville and DHL has an international shipping hub at Cincinnati/Northern Kentucky International Airport. Amazon has long batted down rumours that it plans to start its own package delivery service, saying it's just trying to speed up deliveries and lower costs. The company insists it will continue working with the U.S. Post Office, UPS, FedEx and other carriers to deliver packages.

"It's not a big surprise," Cathy Roberson, founder of consulting firm Logistics Trends & Insights, said of Amazon's Kentucky announcement. "By utilizing that location they can reach anywhere in the U.S. in two days."

E-COMMERCE EXPLOSION

If Amazon succeeds in building out its delivery infrastructure, it could ultimately reduce package volume for companies like FedEx and UPS, Roberson said. On the other hand, ecommerce volume is growing so fast there may be room for everyone, she said.

For example, UPS reported Monday that 55 per cent of its fourth-quarter deliveries -- and 63 per cent of those in December -- were directly to consumers, setting records in both cases.

THE RUB

It's no sure bet that Amazon will succeed in the highly competitive and complex delivery space.

"It's hard to scale up, to have a network as built out and mature as FedEx, UPS or DHL," Roberson said. "Amazon is still not mature." To really go up against that big three, she said, Amazon will have to invest "an awful lot of money in networks and more facilities" -- at least double what it's already spending, she estimates.

Still, Amazon has a history of developing services for its own use and then offering them to other customers. It built Amazon Web Services, its cloud computing business, for its own purposes; that service now generates annual revenue of more than $12 billion.

"You could see a scenario in the future where they perfected their delivery network and become a carrier for other retailers," said Rob Convey, CEO of Convey, a company specializing in improving retailer shipment delivery.