Rakuten Viber is a cross-platform messaging and voice/video calling application that lets users communicate using their phone number across mobile and desktop devices. It supports 1:1 and group chats, media sharing, and voice/video calls, with end-to-end encryption enabled by default for private and group chats as well as 1:1 calls. Users can also make paid calls to landlines and mobile numbers via Viber Out, extending reach beyond app-to-app communication. For businesses, Rakuten Viber provides messaging products that include business messages, campaign messaging, and chatbots, allowing brands to run customer communications and automation inside the app. Rakuten has also introduced business-focused security measures that keep consumer conversations end-to-end encrypted while supporting secure connections for business-user interactions.