What are the different editions of Windows 7 and their features?

There are several editions of Windows 7, each catering to different user needs. The most common editions include Windows 7 Starter, Home Basic, Home Premium, Professional, Enterprise, and Ultimate. Windows 7 Starter is a basic edition designed for netbooks with limited functionality and no multi-monitor support. Home Basic provides essential features but lacks some advanced capabilities. Home Premium offers advanced entertainment features like Windows Media Center and touch-screen functionality. Professional includes additional networking and security features, and supports domain usage. Enterprise is built for medium to large businesses with comprehensive security features and virtualization capabilities. Ultimate is the most comprehensive edition combining all the features of other editions, including BitLocker encryption and multilingual support. The choice of edition depends on specific needs, such as personal usage, business requirements, or advanced security features. It's recommended to review the individual features to select the most suitable edition of Windows 7.