Billionaire hedge fund manager Philippe Laffont of Coatue Management was busy in the second quarter, adding to his investment firm's positions in Amazon (NASDAQ: AMZN) and (NASDAQ: MSFT). Amazon is Laffont's second-largest position, while Microsoft is his fifth-biggest holding.

Let's look at what may have attracted Laffont to these two "Magnificent Seven" stocks and if investors should be scooping up shares as well.

Amazon's AWS and Microsoft's Azure are the two market leaders in the cloud computing space. AWS has about a 32% market share, while Azure is around 23%, although estimates vary slightly depending on the source. Cloud computing is a very fixed-cost business, so size and scale matter, and these two companies have just that.

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Source Fool.com