Android Lollipop is the fifth major version of the Android operating system, released in November 2014. It introduced a fresh design called "Material Design," which emphasized bold colors, smooth animations, and responsive layouts. This update aimed to create a more intuitive user experience across various devices, including smartphones and tablets. In addition to its visual enhancements, Android Lollipop brought several new features, such as improved notifications, a more efficient battery saver mode, and enhanced security options. It also allowed users to manage multiple accounts on the same device, making it easier for families or shared users to customize their experience.