Microsoft Windows 10, released in July 2015, is a versatile and user-friendly operating system designed for PCs, tablets, and smartphones. It reintroduces the Start Menu with live tiles, offers the Microsoft Edge browser, and supports virtual desktops for better multitasking. Key features include Cortana, a virtual assistant; Continuum Mode for seamless transition between desktop and tablet modes; Windows Hello for biometric authentication; and the Action Center for notifications. Windows 10 emphasizes regular updates for security and new features, providing a cohesive experience across all devices.