The tech leader still has plenty of arrows in its growth quiver.Amazon (AMZN 0.73%) is one of my largest holdings. And I am a happy shareholder considering the amount of money it has made me over the years. The company does have its detractors. Some claim its current size severely limits its upside, while others argue that it is losing ground to some peers in the cloud computing market, making its outlook far more uncertain.However, I remain bullish on the stock, and I don't intend to sell my shares anytime ...