Employees make preparations for a launch party at Amazon.com Inc.'s new fashion photography studio in the Shoreditch district of London, U.K., on Thursday, July 23, 2015. Amazon reported a surprise second-quarter profit on top of sales that beat analysts' estimates, showing investors -- as it has done before -- that the Web retailer can make money when it puts the brakes on investments.  Photographer: Simon Dawson/Bloomberg via Getty Images