Citrix Virtual Workspace — Secure Access From Any Device
Your people need access to business applications — from the office, from home, from client sites. Your IT team needs control — over security, performance, and compliance. Citrix Virtual Apps and Desktops bridges that gap. OAS has been a Citrix Platinum Partner since 1987 — one of the longest-standing Citrix partnerships in Southern Africa. We design, deploy, and manage Citrix environments for regulated industries where security and performance are non-negotiable.
Your Applications, Delivered Securely
Remote work is not a trend. It is a permanent shift in how South African businesses operate. Your people work from offices, home, client sites, and airports. They use company laptops, personal devices, and tablets. They need access to the same applications and data, regardless of location or device.
Citrix Virtual Apps and Desktops delivers Windows applications and full desktops to any device, over any connection. Your applications run in your data centre or cloud — not on the endpoint. Data never leaves your controlled environment. Users see a responsive desktop experience. IT retains complete control.
Citrix Virtual Apps and Desktops (CVAD)
CVAD is the on-premises foundation for enterprise virtual workspace delivery. Your applications and desktops run on servers in your data centre, streamed to users via the HDX protocol — Citrix's proprietary technology for high-performance virtual sessions.
HDX Protocol
Citrix HDX adapts to network conditions in real time. Adaptive transport and EDT protocol optimise performance over bandwidth-constrained connections. Multimedia redirection offloads video and audio processing to the endpoint. The result — your users experience a responsive desktop, even over poor connections.
Session Management
CVAD provides enterprise-grade session management that basic virtual desktop solutions lack:
- Multi-session Windows — multiple users share a single Windows Server instance efficiently
- Session recording — record sessions for compliance, training, or dispute resolution
- Watermarking — visible session watermarks deter data exfiltration
- Session roaming — users disconnect from one device and reconnect from another without losing their session
- Granular policies — control printing, clipboard, drive mapping, and USB redirection per user, group, or location
Application Virtualisation
Deliver individual Windows applications to any device without installing them locally. App Layering simplifies complex application stacks. Users see only the applications they need — no full desktop to manage. IT manages one image, not thousands of endpoints.
GPU Virtualisation
GPU-accelerated virtual desktops support demanding workloads — CAD, radiology imaging, financial modelling, and data analytics. Graphics-intensive applications run smoothly in virtual desktops, eliminating the need for expensive physical workstations.
Citrix DaaS (Desktop as a Service)
Citrix DaaS moves the control plane to the cloud while your workloads run wherever they make the most business sense — on-premises, in Azure, AWS, GCP, or any combination.
Hybrid Deployment
This is the architecture most South African enterprises need. Keep sensitive workloads on-premises for regulatory compliance. Scale into Azure for remote users or disaster recovery. Manage everything from a single cloud control plane.
Multi-Cloud Flexibility
Run virtual desktops across Azure, AWS, GCP, and on-premises from a single management console. No vendor lock-in. Place workloads where they deliver the best performance, cost, and compliance outcomes.
Citrix Secure Private Access
Zero-trust network access for web and SaaS applications. Secure browser capabilities for BYOD and contractor access. Users access applications securely without VPN. Contractors and personal devices are supported without risk to your network.
LAS Migration — Act Before 15 April 2026
Citrix has deprecated file-based licensing. The License Activation Service (LAS) replaces it entirely. The hard deadline is 15 April 2026. After this date, on-premises Citrix deployments using file-based licences will lose licence validation.
This affects every on-premises component — Delivery Controllers, VDAs, Studio, Web Studio, NetScaler ADCs, and SVMs.
OAS manages the full migration to LAS with zero disruption to your operations. If your organisation runs on-premises Citrix, this migration is not optional — it is urgent.
Citrix NetScaler
NetScaler is the application delivery controller that ensures your applications remain available, secure, and performant under any conditions.
Load Balancing
Layer 4-7 application load balancing with health monitoring, persistence, and content switching. Applications remain responsive under heavy load. Automatic failover protects against outages.
Web Application Firewall
NetScaler WAF protects internet-facing applications from OWASP Top 10 threats — SQL injection, cross-site scripting, DDoS attacks, and more. Your public-facing applications are defended at the network edge.
SSL Offloading
Hardware-accelerated SSL/TLS termination removes encryption overhead from your backend servers. Server resources are freed for application processing. Encrypted connections are handled efficiently at the network edge.
NetScaler AI Gateway
The newest addition to the NetScaler platform. Centralised control over AI traffic with policy enforcement, cost management, and performance optimisation. As your organisation adopts AI services, NetScaler AI Gateway provides visibility and governance over all AI traffic.
Key Capabilities
- HDX protocol — responsive virtual desktop experience over any connection
- Multi-session Windows — efficient resource utilisation across users
- Session recording and watermarking — compliance evidence and data protection
- Application virtualisation — deliver individual apps without full desktops
- GPU virtualisation — CAD, radiology, and analytics workloads supported
- Hybrid deployment — on-premises and cloud workloads from one console
- Multi-cloud — Azure, AWS, GCP, and on-premises without vendor lock-in
- Citrix Secure Private Access — zero-trust access for web and SaaS applications
- NetScaler ADC — load balancing, WAF, SSL offloading, and AI Gateway
- LAS migration support — deadline 15 April 2026, managed by OAS
Delivered as a Managed Service by OAS
OAS is a Citrix Platinum Partner — one of the longest-standing partnerships in Southern Africa, dating back to 1987. This is not a reseller relationship. OAS designs, deploys, and manages Citrix environments for organisations where performance, security, and compliance are non-negotiable.
- Assessment and design — OAS evaluates your current environment and designs the optimal architecture
- Deployment and migration — from on-premises CVAD to cloud-based DaaS to hybrid configurations
- LAS migration — file-based licensing to License Activation Service, managed end-to-end
- Ongoing management — monitoring, patching, performance tuning, and user support
- Citrix-on-Nutanix — validated reference architecture for organisations moving away from VMware
- Citrix-on-Azure — DaaS running on Azure SA infrastructure for data sovereignty compliance
Citrix vs Azure Virtual Desktop
OAS delivers both Citrix and Azure Virtual Desktop (AVD). The right choice depends on your requirements:
Choose Citrix when you need: multi-cloud flexibility, advanced session management, GPU virtualisation, HDX protocol for bandwidth-constrained sites, session recording, or complex application delivery.
Choose AVD when: you need a cost-effective virtual desktop on Azure infrastructure with simpler requirements, Windows 11 multi-session, and FSLogix profile management.
OAS helps you make the right decision — and delivers whichever platform fits your business.
Recognition
- CVAD 2511 — latest release with Teams optimisation on macOS, Entra SSO, and Hybrid AVD capabilities
- Gartner Magic Quadrant for Desktop as a Service (DaaS)
- OAS Citrix Platinum Partner — since 1987
Secure Access Starts Here
Your applications contain your intellectual property. Your data is your competitive advantage. Citrix virtual workspace technology, managed by OAS, ensures your people access what they need — securely, from anywhere — while IT retains complete control.