Microsoft Operating Systems with C5 Alliance
Build a resilient, secure digital foundation for your business
At C5 Alliance, we help businesses unlock the full value of Microsoft’s leading operating systems
from cloud-powered innovation to secure, scalable infrastructure. Our team of experts works alongside you to implement and manage systems that empower users, support hybrid working, and simplify IT operations.
Windows 11
Windows 365
Windows Server
Microsoft Defender for Business
System Center
Windows 11
Empowering productivity in a hybrid world
Windows 11 is designed for today’s flexible workplace. With a sleek user interface and built-in productivity features, it helps teams stay focused and secure—whether they’re in the office or working remotely. Integrated with Microsoft 365 and Teams, it supports seamless collaboration and provides enterprise-grade security from the ground up.
We help clients deploy and optimise Windows 11 across their organisation, ensuring compatibility, user readiness, and smooth rollout.
Windows 365
Your Cloud PC, anywhere
Windows 365 brings the power and security of the cloud to your desktop. It’s a new way to experience Windows—streaming your personal, secure desktop to any device. With fast access, simplified management, and automatic updates, Windows 365 enables businesses to scale quickly and securely without the need for traditional infrastructure.
We support clients in adopting Windows 365 as part of a flexible, modern desktop strategy—ideal for remote teams, contractors, and BYOD environments.
Windows Server
Your foundation for IT infrastructure
Windows Server is a proven, enterprise-grade operating system for building robust infrastructure. Whether deployed on-premises, in a hybrid model, or integrated with Microsoft Azure, it provides a secure, scalable platform for running applications, managing data, and delivering essential services across your network.
We help businesses design, deploy, and maintain their ideal server environment—whether upgrading to the latest Windows Server or modernising legacy systems. Our consultants ensure reliability, performance, and alignment with your business goals.
Microsoft Defender for Business
Protection that goes beyond antivirus
Microsoft Defender for Business offers advanced endpoint protection for modern organisations. It’s designed to help small and mid-sized businesses defend against sophisticated threats, providing features like threat and vulnerability management, attack surface reduction, and endpoint detection and response.
Our team helps integrate Defender with your existing environment to deliver comprehensive security across Windows, macOS, iOS, and Android. We ensure the solution is configured, monitored, and optimised to match your risk profile and compliance needs.
We support full lifecycle implementation of System Center components,
Helping clients simplify day-to-day IT operations and align infrastructure with best practices.
Secure by Design
Protect your people, data and devices—everywhereInnovation, Safely Delivered
Modern tools implemented with governance front and centreTailored, Not just Off-the-Shelf
Solutions configured around your business—not someone else’sCollaboration Without Barriers
Connect teams securely across locations and devices
As a Microsoft Solutions Partner, we don’t just implement Microsoft technology—we make it work for your people.
With certified expertise across Microsoft platforms, including Azure, Modern Work, and Security, we deliver tailored solutions that drive real business impact. Whether you're a fast-growing SME or a regulated enterprise, our consultative approach ensures secure, scalable, and fully managed environments that support your digital transformation.