Umbraco is an open-source content management system (CMS) built on .NET, used by developers and organisations to build and manage websites. Besides the CMS itself, the vendor offers Umbraco Cloud as a managed hosting service, Heartcore as a headless option, and add-ons for forms, e-commerce, personalisation and analytics. AI tools for editors are also available. You can run Umbraco on your own server or take it as a service through Umbraco Cloud.
Umbraco A/S is headquartered in Odense, Denmark. Monterro, a software investor based in Stockholm, is the majority owner; a minority stake was sold to other investors in 2025. The CMS is released under the MIT licence, so you decide where it is hosted. Umbraco Cloud runs in Microsoft Azure data centres, with West Europe (the Netherlands) as the long-standing default region and UK and US regions as alternatives. Anyone using Umbraco Cloud therefore relies on infrastructure operated by Microsoft.