Amazon's stock jumps 6% after its 4th-quarter results beat the Street's expectations (AMZN)

Amazon's fourth-quarter results, which it announced Thursday, topped analyst expectations. The company's cloud computing business, Amazon Web Services, grew rapidly and again provided the bulk of Amazon's profits. Investors cheered the results, sending the company's stock up 6% in after-hours trading. Amazon's stock jumped more than 6% after the e-commerce giant topped Wall Street's fourth-quarter expectations. The company reported its holiday-period results on Thursday afternoon....