While many 3PL warehouses were full in 2014 and 2015, price competition restricted value-added warehousing and distribution to a 2.2% increase in net revenue for the year. A&A adds that the other big story in warehousing has been the growth of Amazon's fulfillment centre operations. The online retailer's warehouses account for 100m sq ft of space, making it the third largest global value-added warehousing and distribution operator behind DHL Supply Chain & Global Forwarding with 248m sq ft and XPO Logistics' 151m sq ft. The analyst notes: "Amazon is also growing its internal freight forwarding and domestic transportation management skills, so we are awaiting the day when it truly goes to market as an integrated 3PL."