Doug Anmuth, an Internet analyst at JPMorgan, commented in a research note on Friday that Amazon.com, Inc. 's second-quarter earnings mark a "strong" execution across the board.Anmuth stated that the quarterly results also reinforce his view that Amazon has reached a level of scale, efficiency and gross profit dollars that allows it to continue investing "aggressively" in its business model while simultaneously delivering material profits.More importantly, Amazon's 6.9 percent CSOI margin was the highest it has been in over five years, and the company delivered its seventh consecutive quarter of profitability.Source