A domain is a unique address on the internet that identifies a website, while hosting is the service that makes a website accessible on the internet. A website needs both a domain and hosting to be accessible online. The domain name is the address people type in to access the website, while hosting provides the physical location and resources needed to store and run the website’s files and applications. When someone buys a domain name, they can either register it with a domain registrar and find a separate hosting service, or they can purchase both the domain and hosting from the same provider.