Lasith Iyan Kasthuriarachchi
A Microsoft 365 and cloud architect whose work sits in the foundational half of an AI programme: tenant hygiene, identity baselines, oversharing reports, migration backlogs, and long-outstanding access reviews. Twelve years across enterprise IT, the last several as a solutions architect leading modern workplace, endpoint, and migration programmes for defence, financial services, pharmacy, hospitality, and aerospace organisations. Currently with Capgemini. A Copilot for Microsoft 365 Technical Champion.
- Based in
- Dallas, Texas, United States
- Currently
- Capgemini · Lead Solutions Architect — End User Experience
- Experience
- Twelve years across enterprise IT, endpoint and identity operations, and modern workplace architecture
- Industries
- Defence, financial services, pharmacy, hospitality, and aerospace
- Focus
- Microsoft 365 architecture, Copilot readiness and deployment, data governance in Purview, and AI governance operating models
- Education
- B.S. Engineering, City University of New York · MBA, Texas A&M International University
- Languages
- English and Sinhalese — full professional or native proficiency
Twelve Years Inside the Estate
The work has been consistent throughout: helping organisations modernise the digital workplace, adopt AI deliberately, and optimise the end-user computing environment underneath both. As a solutions architect that means working with business and technology leaders to identify practical use cases for Microsoft 365 Copilot, Copilot Studio, Power Automate, Power Apps, and the wider Power Platform — then building the automation, governance, and endpoint foundations that let those use cases survive contact with a real tenant.
In practice the portfolio runs from Copilot adoption strategy and process automation through to vulnerability management, endpoint management, Azure Virtual Desktop and Windows 365, tenant-to-tenant migration, and modern device management across both Windows and Apple estates. The sectors have ranged from a Department of Defense environment to financial services, pharmacy, hospitality, and aerospace.
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May 2022 — Present
Lead Solutions Architect — End User Experience
CapgeminiClient-facing architecture across the modern workplace portfolio. The engagements below were delivered in this role; clients are described by sector rather than named.
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Dec 2024 — Present
SCCM / Intune Lead Architect
Capgemini · Defence and ShipbuildingArchitecting a secure modern workplace and Microsoft 365 in a Department of Defense environment: leading the SCCM-to-Intune migration, Autopilot, Entra ID integration, Microsoft 365 workload governance, Azure Virtual Desktop, and compliance-aligned endpoint operations.
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Jun 2024 — Jan 2025
Microsoft 365 / Intune Lead
Capgemini · Education and Testing ServicesLed the tenant-to-tenant migration strategy across Exchange Online, Teams, SharePoint, OneDrive, identity, and Intune, coordinating secure cutover, adoption readiness, and post-migration stabilisation.
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Jun 2023 — Jun 2024
End User Computing Architect
Capgemini · Cruise Line and LeisureDefined the modern workplace architecture across Intune, Autopilot, Microsoft 365 security, and collaboration services, along with vulnerability remediation and enterprise EUC standards, with adoption and governance guidance attached.
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May 2023 — Aug 2023
Azure Virtual Desktop Architect
Capgemini · Beverage ManufacturingDesigned a secure AVD modern workplace integrated with Entra ID, Microsoft 365 Apps, and Teams, covering profile management, security controls, and enterprise governance.
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Jan 2023 — Jun 2023
Migration Manager
Capgemini · Credit BureauLed Microsoft 365 workload migrations spanning Exchange Online, Teams, OneDrive, and SharePoint, together with the automation, tooling, change readiness, cutover governance, and hypercare around them.
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May 2022 — Nov 2022
MECM / Intune Architect
Capgemini · Defence and AerospaceDesigned the MECM and Intune platforms supporting co-management, Autopilot, Microsoft 365 Apps readiness, security baselines, and cloud-based endpoint access for enterprise users.
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Jun 2021 — May 2022
Lead Engineer
CyrusOneModern workplace engineering across Windows and macOS: Intune, Autopilot, hybrid identity, Azure Virtual Desktop, Microsoft 365 service operations, automation, and end-user support.
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Aug 2018 — Jun 2021
IT Administrator III
MoneyGram InternationalModernised enterprise desktops and Microsoft 365 operations through endpoint management, Teams and OneDrive enablement, cloud migration, automation, identity integration, and user support.
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Jun 2015 — Aug 2017
Integration Analyst and Manager
Universal Marine Medical SupplySupported Office 365 collaboration, endpoint and identity administration, ERP integration, and reporting, coordinating infrastructure across global operations alongside user onboarding and adoption.
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Mar 2015 — Apr 2016
IT Associate
YMCA — New Americans Welcome CenterOffice 365, virtual desktops, endpoint deployments, account provisioning, user training, and day-to-day modern workplace operations.
The Problem Was Never the Model
The models continue to improve independently of any individual organisation. What has not improved at the same rate is the estate they land on, and that gap is where AI programmes typically fail.
Experience Running the Estate
Tenant administration, identity, endpoint management, and migration are not adjacent to Copilot readiness; they constitute it. Advice formed without operational exposure to the estate tends to under-estimate the remediation effort by a quarter or more.
Ownership of the Licence Case
Persona-led allocation, prerequisites verified before purchase, dormant seats reclaimed, and a baseline captured while an uncontaminated measurement remains available. The renewal decision is determined well before the renewal date.
Accountability After Delivery
Consulting here means embedded and answerable rather than advisory. The same person who produced the assessment leads the remediation, chairs the agent review, and reports value to the sponsor.
Certifications and Training
Certifications across Microsoft 365, Azure, and AWS, with badges verifiable on Credly.
| Credential | Issuer |
|---|---|
| Copilot for Microsoft 365 Technical Champion | Microsoft |
| Microsoft 365 Certified: Enterprise Administrator Expert | Microsoft |
| Microsoft 365 Certified: Modern Desktop Administrator Associate | Microsoft |
| Microsoft Certified: Azure Administrator Associate | Microsoft |
| Microsoft Certified: Azure Fundamentals (AZ-900) | Microsoft |
| AWS Certified Solutions Architect – Associate | Amazon Web Services |
Further training in AWS and Microsoft Sentinel deployment. Badges are published at credly.com/users/iyan-kasthuriarachchi.
Service and Community Involvement
A consistent theme predating the technology work: commitment to the organisation rather than to the individual project.
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Service Corps Member
CUNY Service Corps, New YorkPlaced with community organisations on projects intended to outlast the placement — an early lesson in the difference between completing work and leaving something that continues to operate independently.
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Youth Organizer
Sri Lanka Red Cross SocietyCoordinating volunteers and youth programmes in a context where organisation mattered more than any individual contribution.
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Professional Societies
ASME · National Society of Black EngineersMember of the American Society of Mechanical Engineers and the National Society of Black Engineers.
How to Begin an Engagement
Most engagements follow the same sequence, and the first step carries no cost.
- Take the assessment. Four minutes, forty capabilities, returning a tier, a named blocker, and a ninety-day plan. No email is required to see the result.
- Send the result. If it proves useful, the result page composes an email containing your scores. That is the entirety of the lead-capture mechanism.
- A conversation. Typically thirty minutes, largely concerned with whether the blocker the assessment identified matches what was already suspected.
- The engagement. Diagnose, decide, deliver, and own, with monthly value reporting to the funding stakeholder.
Views expressed on this site are personal and independent of any employer.
Start with an Honest Position
Four minutes across eight pillars will establish whether the next item on your roadmap is the one genuinely blocking progress.