Where is the Microsoft Cloud? In reality, it exists in globally distributed data center infrastructure, connected through a worldwide fiber optic network. This infrastructure supports over 200 online services, including Bing®, Hotmail®, MSN®, Office 365, Windows Live®, X-Box Live®, and the Windows Azure™ platform. Microsoft has been operating data centers since 1989, and we continue to make significant strategic investments in this area each year. Take a tour of one of Microsoft’s Data Center.