Hosting refers to the service of providing storage space and access for websites or applications on the internet. It involves renting server space from a provider, enabling the website or app to be accessible online. There are various types of hosting, including shared, VPS, dedicated, and cloud hosting, each offering different levels of performance, security, and control. Hosting services typically include domain registration, email accounts, and technical support. The choice of hosting depends on the specific needs of the website, such as traffic volume, required resources, and budget. Reliable hosting is crucial for ensuring website uptime, speed, and security.