Group 1: Amazon - Amazon's e-commerce business is a significant revenue generator, but its largest operating profits come from Amazon Web Services (AWS) and its advertising platform [3][4] - The advertising business's annual run rate has more than doubled in the past four years, reaching $69 billion by the end of 2024 [5] - AWS remains a leader in cloud computing, with growth driven by a suite of artificial intelligence offerings, contributing billions to sales [5][6] - Amazon has a culture of innovation, significant cash flow, and over 200 million Prime members, providing various monetization opportunities [6] - Despite competitive threats, Amazon's wide moat from switching costs and network effects positions it well for long-term success [7][8] Group 2: Shopify - Shopify enables merchants to create sophisticated online storefronts, essential for both online and traditional businesses [9] - The company has captured over 12% of the U.S. market by gross merchandise volume, making it a leading player in its niche [10] - There is significant potential for growth as retail transactions continue to shift online, with analysts predicting rapid market expansion [11] - Shopify benefits from switching costs, as merchants are less likely to switch providers after investing in their Shopify-built websites [12] - Although Shopify is not consistently profitable, it has improved margins and free cash flow, with expectations of profitability in the coming years [13][15]