A domain name is a unique and memorable address that identifies a website on the internet. It serves as the online identity of a business, organization, or individual, allowing them to establish a distinct online presence. A domain name typically consists of a combination of letters, numbers, and symbols, separated by periods, and is used to access a specific website or send emails. It is like the digital equivalent of a physical address, providing a way for internet users to locate and access a website easily. Domain names are registered and managed by domain registrars and can be purchased for a specific period of time, usually in yearly increments. They play a crucial role in branding, marketing, and establishing credibility in the online world.