Server hosting refers to the service of providing physical or virtual servers to store and manage data for websites and applications. Companies or individuals can rent these servers from hosting providers to ensure their online presence is accessible to users. This service includes the necessary infrastructure, such as hardware, software, and network connectivity. There are different types of server hosting, including shared hosting, where multiple users share a single server, and dedicated hosting, where one user has exclusive access to an entire server. Each option offers varying levels of performance, security, and cost, allowing users to choose based on their specific needs.