IT moving in the
right direction.
Castle Computers is the IT partner Irish businesses rely on — managing your infrastructure, Microsoft 365 tenants, networks, and security so you can focus on running your business.
Your complete IT partner
From managed infrastructure and Microsoft 365 to networks, cloud backup, and remote support — we handle it all.
Managed Services
Skilled, experienced IT support that eliminates the need to hire separate IT staff — keeping your systems and networks running efficiently.
Microsoft 365 Management
Full Microsoft 365 tenant management for productivity, collaboration, and security — licences optimised, policies enforced.
Networks & Infrastructure
Managed network infrastructure, WiFi, hybrid cloud solutions, and unified communications for your office and remote workers.
Cloud Backup & Security
Hosted endpoint security powered by Trend Micro — block ransomware and targeted attacks, with cloud backup to protect your data.
Remote support
Need a quick fix? Book a remote support session and we'll connect directly to your machine.
Ready to hand over the keys?
Talk to us about your current setup. We'll identify quick wins and build a long-term plan that fits your business.