Umbraco Silver Partner • 17 Years' .NET Experience

Patient Data Deserves Secure Software

Unsupported Umbraco puts you at risk of breaches, compliance violations, and audit failures.

We've worked with NHS Trusts and healthcare organisations. We understand DSP Toolkit, GDPR, and the unique requirements of medical websites.

17 Years' .NET Experience
30–50% More Cost-Effective
Same Timezone (GMT/CET)

Trusted by Leading Brands Across Europe

Ferbar
Danish Crown
Amorim Cork
REN
InformaDB
Progress CU
Eighty Days
EPAL
Ferbar
Danish Crown
Amorim Cork
REN
InformaDB
Progress CU
Eighty Days
EPAL
Security Notice

Do You Know Which Umbraco Version You're Running?

Unsupported versions leave you exposed to security vulnerabilities, compliance issues, and growing technical debt. It's worth checking.

Next End-of-Life (v16):
0
Days
0
Hours
0
Mins

Unsupported Versions — Upgrade Required

critical
v7
LEGACY
critical
v8
LEGACY
critical
v9
STS
critical
v10
LTS
critical
v11
STS
critical
v12
STS
critical
v14
STS
critical
v15
STS
medium
v16
STS

Supported Versions — Your Upgrade Targets

v13
LTS
.NET 8 LTS
ReleasedDec 2023
Supported UntilDec 2026
Support Type3 Years (LTS)
RECOMMENDED
v17
LTS
.NET 10 LTS
ReleasedNov 2025
Supported UntilNov 2028
Support Type3 Years (LTS)
  • Maximum support window (Nov 2028)
  • .NET 10 LTS performance gains
  • Future-proof your investment
🛡️

LTS — Long-Term Support

3 years of security updates

LTS versions align with .NET LTS releases: 24 months of full support plus 12 months of security-only updates. The sensible choice for production sites needing stability.

v10v13v17v21
🚀

STS — Standard-Term Support

1 year of security updates

STS versions offer the latest features and .NET versions, with 9 months of full support plus 3 months of security updates. Better suited to teams who want to stay on the cutting edge.

v14v15v16v18

The Cost of Waiting Is Higher Than You'd Expect

🔓

Security Exposure

End-of-life versions receive no security patches. Each new vulnerability discovered remains a permanent risk to your data and reputation.

📈

Compounding Technical Debt

The longer you wait, the more breaking changes accumulate. Upgrading from v8 to v17 typically costs 3-4× more than v13 to v17.

Performance Gap

.NET 10 delivers 40%+ faster cold starts and 2× better throughput than .NET Framework. Your competitors may already be there.

Not certain which version you're on, or what the best upgrade path looks like?

We'll Assess Your Site—Free of Charge

Check My Version & Get a Plan

15 minutes of your time • No obligation • Full report within 48 hours

0
Projects Delivered
0
Years' Experience
0
Countries Served
0
Active Clients
The Problem

Do Any of These Sound Familiar?

Security Vulnerabilities

End-of-life Umbraco versions receive no security patches. Every day that passes, your exposure to data breaches increases.

Risk: Critical

Mounting Maintenance Costs

Finding developers who know legacy Umbraco is getting harder and more expensive. Modern versions are far easier to maintain.

Cost: +40% annually

Degraded Performance

Legacy Umbraco sites load slower, hurt SEO rankings, and frustrate users. Every second of delay costs you conversions.

Impact: Revenue & Rankings

Compounding Technical Debt

The longer you wait, the more difficult and expensive the migration becomes. Act now while it's still manageable.

Urgency: Every month matters
Our Work

Projects We're Proud Of

A selection of Umbraco projects delivered for clients across Europe.

#01
Ferbar
Food & Beverage

Ferbar

Complete Umbraco implementation for Portugal's leading food distribution company.

Umbraco 13.NET 8Azure
#02
Danish Crown
Food & Beverage

Danish Crown

Multi-site Umbraco platform for one of Europe's largest meat producers.

Umbraco 10.NET 6Multi-language
#03
Amorim Cork Solutions
Manufacturing

Amorim Cork Solutions

Global corporate website for the world's largest cork producer.

Umbraco 13.NET 8Multi-site
#04
REN
Energy

REN

Corporate platform for Portugal's national energy grid operator.

Umbraco 10.NET 6Azure
#05
InformaDB
Financial Services

InformaDB

Business intelligence platform for Portugal's leading credit information provider.

Umbraco 13.NET 8API Integration
#06
Progress Credit Union
Financial Services

Progress Credit Union

Member-focused website for Ireland's community credit union.

Umbraco 13.NET 8Member Portal
Double handled our entire Umbraco migration with professionalism and transparency. The site is now much faster and we finally feel secure.
SM
Sarah Mitchell
Head of Digital, UK Enterprise
How We Work

A Straightforward Path from Legacy to Modern Umbraco

Four phases. Full transparency. No surprises.

01

Discovery

We audit your current Umbraco site, document all customisations, and create a detailed migration plan.

1-2 weeks
02

Migration

We upgrade your CMS to Umbraco 17, migrate all content, and rebuild custom functionality.

4-8 weeks
03

Testing

Comprehensive QA testing, performance optimisation, and user acceptance testing.

1-2 weeks
04

Launch

Zero-downtime deployment, post-launch monitoring, and knowledge transfer to your team.

1 week
Clear Pricing

Fixed-Price Packages. No Hidden Costs.

Choose the package that suits your site's complexity.

Essential

From £8,000

Simple brochure sites with minimal customisation

  • Umbraco 7/8 to 17 upgrade
  • Content migration
  • Basic testing
  • 2 weeks support
Get Started
⭐ Most Popular

Professional

From £15,000

Sites with custom integrations and moderate complexity

  • Everything in Essential
  • Custom package migration
  • Performance optimisation
  • Training session
  • 4 weeks support
Get Started

Enterprise

Custom

Multi-site, complex integrations, high availability

  • Everything in Professional
  • Multi-site support
  • Custom SLA
  • Dedicated support
  • Ongoing retainer options
Get Started

All prices exclude VAT. Final price confirmed following technical assessment.

Common Questions

Frequently Asked Questions

Most migrations take 8–16 weeks, depending on complexity. A straightforward brochure site might be 6–8 weeks, whilst a complex enterprise site with bespoke integrations could be 12–16 weeks. We provide realistic timelines after our discovery phase.

All content is migrated to the new platform. We use automated migration scripts combined with manual validation to ensure nothing is lost. You continue updating your existing site until go-live, and we do a final content sync before launch.

Not necessarily. We can migrate your templates and styles as they are. That said, many clients use this as an opportunity for a design refresh. We can do both—migrate first then iterate, or combine them if the timeline allows.

We include 2–4 weeks of hypercare support post-launch. During this period, any issues are prioritised and addressed promptly. We also offer ongoing maintenance contracts for longer-term peace of mind.

Absolutely. We regularly white-label for UK agencies who need specialist Umbraco expertise. We integrate with your project management tools, attend standups, and work as a seamless extension of your team.

Bespoke code is refactored to work with .NET 10 and Umbraco 17. We assess each integration individually—some can be upgraded, others may need replacing with modern alternatives. You receive a complete breakdown during discovery.

Get Started

Let's Discuss Your Umbraco Upgrade

Book a free 30-minute consultation to assess your requirements.

Or reach us directly:

geral@double.pt+351 21 124 8327