Amazon (AMZN.US) reported Q3 revenue, EPS and operating profit above consensus, and Wall Street analysts are bullish and excited about the company's growth prospects and further upside in its stock price.Morgan Stanley analyst Brian Nowak said his concerns about the e-commerce giant's recent efforts to create profitability across the company and manage through investments in low-priced essentials were overblown, noting that retail EBIT was 15% above expectations.Wedbush Securities analyst Dan Ives highlighted that Amazon reported operating profit above the high end of its guidance for the seventh consecutive quarter, and the company has many future drivers of profit margin growth, including ongoing cost efficiencies in its delivery network and a continued mix shift toward higher-margin AWS and advertising revenue.Evercore ISI analyst Mark Mahaney and his team continued to recommend a bullish stance on Amazon, seeing more room for AWS to accelerate growth and Amazon Prime Video's profitability just beginning.Mahaney also noted that Amazon is leveraging several new promising growth initiatives, including Pharmacy and Kuiper. Interestingly, Mahaney mentioned the idea of Amazon paying a dividend and launching a new share buyback. He wrote, "Lastly, as profitability improves, the inevitability of material capital returns is increasing as Amazon's cash pile is over $100 billion."Seeking Alpha analyst Abdullah Al-Rezwan highlighted that Amazon delivered another impressive quarter, noting that each part of the company's business seems to be developing well and moving in the right direction.