Selected experience

Project outcomes.

Anonymised examples show the scale of environments supported, the work delivered and the concrete outcomes achieved.

014,500 users · 180 VDAs · multiple locations

Citrix migration

Starting point: An ageing CVAD farm with technical debt and expiring support.
Solution: A new Citrix environment was built and users and applications were migrated in controlled phases.
Outcome: Migration without production-impacting downtime, improved stability and simpler operations.

Citrix CVAD · StoreFront · Director · NetScaler · ControlUp · Microsoft GPO · SQL Server

023,000 external users · 25 published services

Starting point: A historically grown gateway configuration contained several single points of failure.
Solution: The platform was rebuilt as a hardened high-availability NetScaler pair with Microsoft MFA through Entra ID.
Outcome: No unplanned gateway outages after the change, faster troubleshooting and stronger authentication.

NetScaler ADC · Gateway · GSLB · nFactor · TLS · Entra ID

032,500 users · 120 session hosts

Starting point: Long logon times and recurring session issues affected user experience.
Solution: Policies, profiles, logon scripts and infrastructure dependencies were analysed with ControlUp.
Outcome: Average logon time reduced from 95 to 28 seconds.

Citrix CVAD · Director · WEM · ControlUp · FSLogix · Group Policy · PowerShell

04800 virtual desktops · multiple machine catalogs

Starting point: VDA provisioning and updates required extensive manual effort.
Solution: Master images were standardised and an automated MCS provisioning process was introduced.
Outcome: Provisioning time reduced from several days to a few hours.

Citrix MCS · XenServer · PowerShell · Windows 11 · Microsoft Defender

056,000 users · hybrid Citrix environment

Starting point: Internal and external users relied on separate authentication procedures.
Solution: A unified authentication architecture was designed and implemented.
Outcome: Fewer sign-in steps, simpler user access and improved security.

Citrix StoreFront · NetScaler · Microsoft Entra ID · FAS · SAML · Kerberos · PKI

063,500 users · 200 published applications

Starting point: An on-premises Citrix control plane generated substantial maintenance and upgrade effort.
Solution: The control plane was migrated to Citrix DaaS while workloads continued to run locally.
Outcome: Reduced local infrastructure and substantially lower upgrade effort.

Citrix DaaS · Cloud Connector · NetScaler · Active Directory · Azure · ControlUp

078 NetScaler systems · multiple Citrix sites

Starting point: Critical vulnerabilities and inconsistent security configurations required remediation.
Solution: Systems were updated, configurations cleaned up and repeatable security baselines introduced.
Outcome: Critical findings fully remediated and a repeatable assessment process established.

NetScaler ADC · Citrix Console · FIM · TLS · NITRO API · PowerShell

081,200 users · 70 VDAs

Starting point: Recurring VDA crashes and intermittent user disconnects disrupted operations.
Solution: Crash dumps, drivers and Citrix components were analysed and remediation was coordinated.
Outcome: Crash rate reduced by 90 percent and stable day-to-day operations restored.

Citrix CVAD · ControlUp · Windows Server · VMware · Citrix HDX

09300 session hosts · multiple locations

Starting point: Inconsistent vDisks and manual update processes made maintenance unnecessarily complex.
Solution: Images were consolidated and versioning and rollback procedures standardised.
Outcome: The number of production images was reduced by 60 percent and patching accelerated.

Citrix Provisioning · VMware · PowerShell · Windows Server

105,000 users · multiple Citrix sites

Starting point: Recurring manual checks created effort and avoidable operational risk.
Solution: An automated health-check and reporting framework was developed.
Outcome: Monthly assessment effort reduced from two working days to less than two hours.

PowerShell · Citrix SDK · Microsoft Graph · HTML Reporting · Task Scheduler

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