Online systems refer to digital platforms that allow users to access, share, and manage information over the internet. These systems can include websites, applications, and databases that facilitate various functions, such as communication, e-commerce, and data storage. They rely on servers and networks to operate, enabling users to interact in real-time from different locations. Examples of online systems include social media platforms, e-learning tools, and cloud storage services. These systems enhance productivity and connectivity by providing users with easy access to resources and services. As technology advances, online systems continue to evolve, offering more features and improved user experiences.