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

NetScaler high availability

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

Citrix performance optimisation

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

MCS modernisation

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

StoreFront and Entra ID integration

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

Citrix Cloud migration

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

Security hardening

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

Platform stabilisation

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

PVS consolidation

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

Operations automation

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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