1&1 refers to two different companies: 1&1 AG, a German telecommunications provider for mobile and fiber optic services, and 1&1 IONOS, which offers web hosting, cloud solutions, and other digital services, primarily for small and medium-sized businesses. Both are subsidiaries of the United Internet Group and operate internationally. A third entity, Dasht-e Morghab Company, uses the 1&1 brand for its food products and is not related to the telecommunications or hosting companies.