Umbraco is an open-source content management system built on .NET. It's written in C# and runs on ASP.NET Core, so it fits naturally into the infrastructure of companies already using Microsoft products: Azure, enterprise ERP and accounting systems, and internal .NET services.
Companies choose Umbraco for corporate websites, partner portals, and multilingual sites for international businesses. We launch new Umbraco projects, upgrade legacy versions, and take over support of existing sites.
We build company websites with many sections, languages, and editors, with a content structure designed around your business.
We connect the website to internal .NET services, enterprise ERP systems, your CRM, and employee single sign-on.
We set up Umbraco as the content source for a separate front end, a mobile app, or several websites at once.
We migrate sites from old Umbraco versions on the legacy .NET Framework to current versions on ASP.NET Core.
We support sites built by other teams: fixing bugs, speeding up pages, and adding new content types and features.
We account not just for the website, but for your infrastructure and IT policies
We review your IT infrastructure: where the servers will be, which systems connect, and what security requirements apply.
We design the document types and blocks editors will use to build pages, plus the structure of language versions.
We agree on editor roles, the change approval workflow, and hosting: your own servers, Azure, or Umbraco Cloud.
We build templates and custom C# modules and test them, integrations included, in a staging environment that mirrors production.
We set up CI/CD, content transfer between environments, backups, and error monitoring.
We train each editor group, and after launch we update Umbraco, .NET, and packages and develop the site according to plan.
We combine research, UX/UI, development, integrations, marketing and support so your digital product works as a real business tool.
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Trusted by clients across the US, Europe and Ukraine
Umbraco is one of the few mature open-source CMSs in the .NET world. It's developed by the Danish company of the same name, and the core version is free. Key capabilities:
The main reason to choose Umbraco isn't the CMS itself — it's the ability to make your website an extension of your corporate systems. In practice, that means:
A corporate website rarely has just one editor. PR handles news, HR handles job postings, the product team manages the catalog, and translations are done by different people in different countries. Umbraco lets you organize all this without chaos:
We set up these rules together with your stakeholders and run separate training for each editor group.
Your own servers give you full control and suit companies with strict internal data policies.
Azure is convenient if your other services are already there: it's easier to scale and to set up backups and load balancing. Learn more on our cloud infrastructure and Azure page.
Umbraco Cloud, the vendor's hosting, takes care of updates and deploying changes between environments, but it's a monthly subscription with less configuration freedom. We help you compare the options against your requirements.
A new website starts with your IT team's requirements and the content model. These determine which integrations we build in from the start and which can be added later.
For an existing website on an old Umbraco version, we start with an assessment: CMS and .NET versions, custom modules, third-party packages, and content volume. Then we propose a path: a gradual upgrade through intermediate versions, or migrating content to a fresh installation with rewritten templates. The second option is often more reliable when the site is many years old and several teams have changed its code.
Is Umbraco really free? The CMS core is, yes — it's open source. The vendor's cloud hosting and certain add-on modules may be paid, so we work out those costs with you up front.
Do we need a Windows server? Not necessarily. Modern Umbraco versions run on ASP.NET Core, which also runs on Linux.
Our site is on a very old Umbraco version. What should we do? Start with an audit, then a plan to upgrade or migrate. Old versions no longer receive security patches, so putting this off is risky.
Can support be handed over to our in-house IT team? Yes. We hand over the code, documentation, and environment configuration, and can support your team through the early stages.
Can we connect a mobile app? Yes. Umbraco can serve content through an API, so the app displays the same content as the website.
Promodex has been in business since 2015, with 750+ projects of all sizes behind us. We see Umbraco as a tool for specific conditions — companies running on Microsoft technologies — and we'll tell you honestly if a simpler solution would suit you better. All work, from planning to ongoing support, is done by our in-house specialists; we never hand anything off to third-party contractors. We agree on terms and the engagement model transparently, and after launch we help your website keep growing.
