An intranet is the internal digital hub — news, resources, tools, directories, and increasingly social features — that employees use to find information and connect. It's the backbone channel of internal communications, though its effectiveness depends on being genuinely useful rather than a neglected document graveyard. Modern intranets (Microsoft Viva and comparable platforms, or bespoke builds) blend top-down communication with employee collaboration and serve as the searchable source of truth for how a company works.