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.NET Legacy Apps are Threatening Your Security!

Azure Cloud Brings 100% Unlimited Business Security.
MS Solutions Partner. ISO 27001, 20000, 9001 Certified

Talk To Us About Securing Your Business

Best-Practice .NET Modernisation & Migration Azure Solutions, with
Best-In-Class Enterprise Support.

  • 100% Secure - Absolutely No Question
  • System Integrity
  • Off-Site Storage
  • System Backups
  • Reduced Cost of Ownership

Globally in 2021, there was a 50% Increase in Cyber Attacks on Corporate Networks

Ireland Has One of the Highest Rates of Data Breaches in the EU

January 2021 Report - DLA Piper


€3.72 million

The average business cost of data breaches in 2021 ("Cost of a Data Breach 2021", IBM )

€1.39 million

The average cost of lost business due to system failures and breaches in 2021 ("Cost of a Data Breach 2021", IBM )


€252 million

Average cost of legacy systems maintenance for large organisations ("Banks face Spiraling costs from archaic IT", Financial News)

Our .NET Modernisation & Migration
Customer Success

From a world-class taxi regulation portal, a cutting-edge homeless accommodation system accessed by multiple agencies across Ireland, a sustainable waste management UK system and a multi-million-euro public works capital grant platforms for the country’s largest government bodies – our .NET solutions deliver security, confidence & support to our partner organisations every day.

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Schools Immunisation System

An Expanded System to Support National School Based Vaccination Programmes

housing agency migration and support
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why opensky

Get modern .NET systems, 24/7 scalable support, and accredited expertise when you partner with us.

Your success is our success: we partner with you on a deep level, and build solutions that support your business future.

Why .NET Modernisation with OpenSky

  • Microsoft Solutions Partner.
  • Specialisation in Migrating Enterprise Applications to Microsoft Azure.
  • Standardisation & Best Practices via our .NET Centre of Excellence.
  • ISO 27001, ISO 20000 & ISO 9001 Certifications
  • Extensive GDPR and Data Regulation Expertise.
  • Working since 2004, with experience and successful delivery in development, migration, security, and support in large-scale projects at highest levels of government, large enterprises, and the public sector.
  • Dedicated .NET Technology Teams that research, pioneer, and master best practice for the latest Azure and .NET services.
  • Continuous research and innovation. At OpenSky, we invest over 10% of revenue in R&D to ensure we are always ahead of the technology curve.
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Discover how modern, best-practice .NET modernisation and enterprise support will guarantee your business security

Explore the real business benefits that our bespoke .NET modernisation solutions and enterprise support services will bring to your organisation, including streamlined operations, reduced business costs, and security against breaches and data losses.

OpenSky's other .net services

Not what you're looking for?

Take a look at our .NET Migration and .NET Support services. 


Best-practice .NET migration for modern business. Best-in-class enterprise support. Rigorous data & system security. Bring speed, accuracy, and reliability to your legacy systems.

  • Secure your Businesses Future Against Legacy System Risks.
  • Custom-built Hybrid or Cloud Solutions precisely for your Needs.
  • Rapid Development & Deployment with Our Dedicated .NET Experts
  • Maintain Operations & Avoid downtime, with Full Data Security and Multiple Back-ups.
  • Eliminate Expensive Hiring for Essential Skills, Maintenance, Support services, and QA.


Rigorous Service Level Agreements. Best-in-class enterprise support. Extensive documentation & fast ticket resolution. Give your organisation scalable, fast support that keeps things running.

  • Secure Your Operations Against Downtime & Breaches.
  • Strict Service Level Agreements for fast issue resolution.
  • Maintain Operations, Improve Site & Resource Reliability, and Avoid System Downtime.
  • Dedicated .NET Team, GDPR Experts, & Accredited Helpdesk technicians.
  • Eliminate Expensive Hiring for Essential Enterprise Support and QA Skills.

Thought leadership from OpenSky

Discover the latest articles, blogs, news, and events from OpenSky's team of experts