#428 - Modernizing IGA with Thomas Zarnhofer

Recorded live at EIC 2026 in Berlin, Jeff and Jim sit down with Thomas Zarnhofer, IAM Architect at SPAR-ICS, the IT unit of the SPAR Austria Group, which operates roughly 3,000 retail stores and 32 shopping centers across 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 03:38 What Is SPAR-ICS? 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 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, SPAR-ICS, Retail IAM, EIC 2026, AI in IGA, Predictive IGA, Role Management, Access Governance, IDAC, Identity at the Center, Jeff Steadman, Jim McDonald, Thomas Zarnhofer