Identity at the Center

#428 - Modernizing IGA with Thomas Zarnhofer

Identity at the Center

Show Notes

Recorded live at EIC 2026 in Berlin, Jeff and Jim sit down with Thomas Zarnhofer, IAM Architect at a major retail company in central Europe. Thomas shares his experience leading a full IGA transformation from a decade-old on-premise system to a modern cloud-based platform. The conversation covers the shift from a contract-based to a person-based identity model, the importance of cleaning data before migration begins, a three-phase framework of Foundation, Migration, and Adoption, lessons learned from running two systems in parallel, and a look at how AI could make IGA predictive. The episode ends with Thomas's tips for visiting Austria.

Connect with Thomas: https://www.linkedin.com/in/tzarnhofer/

Connect with us on LinkedIn:

Jim McDonald: https://www.linkedin.com/in/jimmcdonaldpmp/

Jeff Steadman: https://www.linkedin.com/in/jeffsteadman/

Visit the show on the web at http://idacpodcast.com

Timestamps 00:00 Introduction and EIC 2026 Setting 02:00 Thomas's Identity Origin Story 04:21 The Catalyst for IGA Modernization 07:43 Contract-Based vs Person-Based Identity Models 09:22 Consolidating Master Data Sources 11:39 Data Quality and Attribute Ownership 13:34 Partnering with HR for Clean Data 16:43 Data Analysis: Why They Chose Excel Over AI 17:53 Clean Your Data Before You Migrate 18:23 The Three Phases: Foundation, Migration, Adoption 20:12 Driving Adoption Across the Organization 21:10 Running Two Systems in Parallel 22:47 Challenge Everything vs Lift and Shift 27:23 Surprises in the Cloud IGA Journey 29:02 Testing Requirements in the Cloud 29:51 AI and the Future of IGA 32:25 AI Chatbots and Role Discovery 35:30 Scoping Business Role Visibility 36:06 Life Outside IAM: Travel and Austria Tips

Keywords: IAM, IGA, Identity Governance, IGA Migration, On-Premises to Cloud, Identity Model, Contract-Based Identity, Person-Based Identity, Master Data, Data Quality, HR Integration, Joiner Mover Leaver, Cloud IGA, Retail IAM, EIC 2026, AI in IGA, Predictive IGA, Role Management, Access Governance, IDAC, Identity at the Center, Jeff Steadman, Jim McDonald, Thomas Zarnhofer

More from Identity at the Center

Oct 19, 2026

Most cloud security incidents trace back to the customer, and most of those trace back to identity. Jeff and Jim sit down with Mike Small, Senior Analyst at KuppingerCole, to unpack Cloud Native Application Protection Platforms (CNAPP) and why identity practitioners should care. Mike explains how identity controls in the cloud have become data defined in code, why ephemeral workloads break traditional scan-then-deploy security, and how CNAPP evolved from static configuration analysis into runtime monitoring and SOC integration. The conversation covers the shared responsibility model, SOC 2 attestations and complementary user entity controls, multi-cloud complexity, and why standards matter for portability and sovereignty. Mike also looks at CNAPP as a security plane for AI, agents as another layer of non-human identity, recent market consolidation, and the cloud as national critical infrastructure. Plus, a detour into amateur radio, Morse code exams, and low-power QRP contacts across the Atlantic.

Oct 14, 2026

Bojan Simic, co-founder and CEO of HYPR, returns to Identity at the Center for a Sponsor Spotlight conversation with Jim McDonald. Bojan traces HYPR's path from passwordless authentication to a broader set of identity assurance controls and explains how assurance differs from verification across the full employee lifecycle. He describes what organizations find when they look for worker impersonators, from remote employees outsourcing their jobs to North Korean operatives, and why verification has to continue past day one. The conversation then turns to AI agents: why IAM teams are becoming the HR of AI, how agent identity differs from human identity, why humans can't manually govern agents at scale, and why securing MCP alone misses the full context of an agent's session. Bojan also covers what is slowing passwordless adoption, adaptive risk, alert fatigue, and how identity teams and the SOC can work together. This episode was made possible with support from HYPR.

Oct 12, 2026

Eve Maler, founder of Venn Factory and author of Mastering Digital Identity, joins Jim McDonald and Jeff Steadman for her tenth appearance on Identity at the Center. Eve shares what she has learned since the book came out, from writing for non-technical executives (and keeping AI out of the manuscript) to the strange places identity ends up on the org chart. The conversation covers treating identity as a product, why identity can be a business model in disguise, how CISOs can influence CIAM when they are not the boss of it, and the identity debt that AI is now calling due. Eve also explains why intent looks more like purpose of use than finer-grained authorization, how contract language can help frame agent mandates, what trust means to humans versus security teams, and the early work on UMA for Agents (U4A) to govern third-party agents through a resource-centric, protect surface mindset. The episode wraps with travel tips from all three frequent flyers.

Oct 5, 2026

Shea McGrew, Chief Technology Officer at Maricopa County, returns to Identity at the Center one year after episode 376 to take on a question she first raised at our Identity After Dark session: when does digital identity become critical infrastructure? Jeff and Jim talk with Shea about how a county broadband and digital equity project led her to see digital trust as the thread running through every digital government service, and why that trust depends on identity. The conversation covers building an external identity portal for residents, designing for consent and privacy from the start, why residents extend trust to private platforms more readily than to government, the right to be forgotten, data governance across departments, and where decentralized identity and verifiable credentials might fit. Shea also shares her view on access reviews as a learning journey, what it would take to trust AI agents with certifications, and whether an agent could ever be considered a citizen. Plus, potatoes and the proper way to cut a sandwich.

Sep 30, 2026

Alex Bovee, CEO and co-founder of C1.ai (formerly ConductorOne), returns for his third appearance on Identity at the Center. Alex walks Jim and Jeff through the rebrand to C1.ai and why the .ai matters: identity now covers humans, workloads, and agents. The conversation opens on launch week and the new App Hub, built around a question many CIOs and CISOs are facing. What happens when everyone in the company becomes a builder and vibe-coded apps start running critical workflows?

See all episodes →