Microsoft

Microsoft put a PC on every desk through Windows, now running on over 1.4 billion active devices, and transitioned to dominate enterprise software with Azure, generating more than $110 billion in annual revenue. It is the longest-lasting top-tier tech firm, outpacing #4 Amazon in operating system market share, though its consumer influence trails #1 Apple. In 2024, Microsoft's cloud revenue grew 22% year-over-year, reinforcing its position as the enterprise backbone.