Enterprise-Grade Support for Word-Class Digital Experiences
As a transatlantic Umbraco Platinum Contributing Partner, Cantarus delivers unrivalled support for organisations looking to evolve, scale, and optimise their digital platforms. Whether you need SLA-backed day-to-day support, long-term transformation, or help navigating complex upgrades, we provide the confidence, continuity, and care you need to thrive.
We’re more than just a CMS agency - we’re strategic partners, integration experts, and architects of exceptional digital ecosystems. Our work doesn’t stop at go-live. Through Timebank, Timeblock, and our Continuous Improvement model, we support you long after launch to keep your platform performant, secure, and future-ready.
We lead the industry with a +75 Net Promoter Score and 100% 12-month rolling customer satisfaction of our Service Desk.
We're proud to be the first and only agency to hold Platinum Contributing Partner status in both the UK and USA.
Led by our Head of Development Services, a recognised global Umbraco MVP, with another MVP on staff and a team of Umbraco certified developers.
Our support services are trusted by WHSmith, the British Medical Association, the NHS, British Mensa, the Chartered Institute of Marketing, and many more leading organisations.
Rest assured that your Umbraco platform is in safe hands from launch to strategic upgrades, continuous improvements and 24/7 incident response.
Our dedicated Client Success team ensures operational excellence through structured, SLA-backed support. With Timebank, you pre-purchase monthly hours for use across our full professional services portfolio - spanning support engineers, developers, analysts, consultants, and designers.
• Clear incident prioritisation (ITIL-aligned)
• Optional 24/7 support
• Support across CMS, CRM, Community, and more
• Direct access to our online service desk
• Unused hours roll over
Timebank ensures you always have experts on hand to troubleshoot issues, implement enhancements, and keep your platform at peak performance.
Timeblock allows you to book time across our delivery teams for larger or strategic projects. Use it for one-off deliveries, iterative changes, UX enhancements, accessibility work, or bespoke feature development.
• Supports ad-hoc draw down or structured Agile sprint-based delivery
• Access to all skillsets across our digital teams
• Ideal for platform evolutions and road mapped enhancements
• Supports content, performance, SEO, UX, and integrations
For many clients, Timeblock becomes their preferred engagement model for iterative development and post-launch scaling.
According to ThoughtWorks, only 46% of digital transformations include a structured improvement process - but those that do see significantly higher success. (Source: ThoughtWorks, 2024)
Continuous Improvement is our strategic framework for ongoing growth. Combining analytics, UX research, and roadmap planning, we provide clients with the evidence, direction, and expertise to evolve intelligently.
• Powered by our cross-functional Data & UX team
• Ongoing audits, testing, reporting, and optimisation
• Access to specialists in design, content, SEO, accessibility, and analytics
• Tailored CI roadmaps aligned to your strategic goals
“At the core of Continuous Improvement is a simple truth: you can’t enhance what you don’t understand.”
Cantarus is the partner of choice for complex Umbraco upgrades and cross-platform migrations. As early adopters of Umbraco 13+, we’ve already delivered major upgrade projects for leading membership and enterprise organisations.
Whether you're moving from Umbraco 7, 8, or 10+, or migrating from another CMS, we’ll ensure a smooth, low-risk transition.
Elevating Digital Excellence in Healthcare: An Umbraco Upgrade for the British Medical Association
.png?mode=crop&width=768&height=768&format=webP)
From Legacy to Leading-Edge: A Digital Transformation for a Modern Battlefield
A Digital Platform Built for Engineers, Designed for Impact
Crafting an accessible website for a children's charity, learn how we delivered a multi-award winning platform
A Digital Transformation for a Global Shipping Community
Through our infrastructure team, we provide robust, flexible hosting tailored to Umbraco platforms.
We understand hosting is not one-size-fits-all. That’s why we offer bespoke environments tuned for speed, uptime, and peace of mind.
We’re not just Umbraco experts – we’re engineers of complex systems. We integrate platforms including:
Our API-first approach ensures clean, scalable integrations that align with your digital strategy.
We support clients with:
Whether you need rapid bug fixes, long-term improvement, or enterprise migration support, we’ve got you covered.
Here are some of the most common questions we hear from organisations looking to maintain, optimise, and evolve their Umbraco platforms.
With a dedicated enterprise offering, Umbraco is well suited to large, complex organisations, bringing products, cloud infrastructure, support, and services together under a single, clear agreement. This provides the security, scalability, and predictability enterprises need, without compromising the flexibility and extensibility Umbraco is known for.
With a dedicated enterprise offering, Umbraco is well suited to large, complex organisations, bringing products, cloud infrastructure, support, and services together under a single, clear agreement. This provides the security, scalability, and predictability enterprises need, without compromising the flexibility and extensibility Umbraco is known for.
We use proven techniques - like caching, load balancing, and cloud deployment - to ensure optimal performance in high-traffic environments.
We use proven techniques - like caching, load balancing, and cloud deployment - to ensure optimal performance in high-traffic environments.
We combine Umbraco’s native protections with advanced controls like RBAC, secure authentication, and encryption - aligning with GDPR, ISO 27001, and Cyber Essentials Plus.
We combine Umbraco’s native protections with advanced controls like RBAC, secure authentication, and encryption - aligning with GDPR, ISO 27001, and Cyber Essentials Plus.
Yes. We build API-first solutions that connect seamlessly with your CRM, ERP, analytics platforms, and more.
Yes. We build API-first solutions that connect seamlessly with your CRM, ERP, analytics platforms, and more.
Our work doesn’t stop at launch. We provide proactive monitoring, roadmap planning, and ongoing optimisation across all three support models.
Our work doesn’t stop at launch. We provide proactive monitoring, roadmap planning, and ongoing optimisation across all three support models.
Whether you need day-to-day stability, long-term optimisation, or a partner to guide your next big upgrade, Cantarus is here to keep your Umbraco platform secure, performant, and future-ready.