The journey to a modern retailer How HEMA established a microservices- and cloud- based environment to develop better software 

We love making daily life better, easier and more fun for our customers. That has been our passion since 1926. We believe that great quality and design should be available to everyone at a great price. This is why our stores offer only 100% HEMA-designed products, so we can guarantee you'll only get the best products and services for daily use. So, whoever and wherever you are, we are there for you 24 hours a day, seven days a week. 

Some facts over HEMA Over 750 stores In 10 countries More than 19.000 employees IT facts: Around 200 developers Working in 30 teams Overall 500+ applications in use 

ERP Retail Ops Order Manage ment Supply Chain Finance HR Analytics MDM Logistics eCommerce Warehouse Automation IT Infrastructure Management (OnPremise) Merchandise Financial Planning Space Management Warehouse Management HEMA 2017 • SAP Landscape • Ca. <10 applications onPremise • Managed by 1 outsourcing partner • Integration per file exchanged managed by ESB POS Cash Register Workforce Management Product Information Management 

Challenges 2017  No technical knowledge within HEMA  All change capabilities at 2 outsourcing partner  > 300 point-to-point interfaces  HEMA employees without admin access on systems 

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ERP Retail Ops Supply Chain Finance HR Analytics MDM Logistics Warehouse Automation Workforce Management Merchandise Financial Planning Space Management Warehouse Management POS Cash Register IT Infrastructure Management (OnPremise) Order Management Loyalty Engagement HEMA 2018 • onPremise Landscape with SAP as center managed by 1 outsourcing partner • Build-up of eCom system • Integration between existing and new environment via API Cloud Based Infrastructure Online Marketing eCommerce Learning Foto Services SelfCheck Out Product Information Management Document Asset Management 

Achieving Near-Realtime Insights • Achieving near-realtime capabilities through constant data sync • Simple API’s & managed hosting enabling innovation by indepent teams 

Enabling access to data from (legacy) systems • Overcoming scalability challenges by placing data in a cloud based access layer • Elastic working as flexible data storage and highly scalable query engine • DataServices: System-Of-Truth • Backends: Systems-of-Records 

Learnings Design for Speed – Loosely Coupling – People before Technology Solve Integration first – Knowing how to integrate massively reduces complexity – Simple & strict rules help to bridge missing experience – Accept legacy but encapsulate it 

ERP @ SAP Retail Ops Supply Chain Finance HR Finance Analytics MDM Logistics eCommerce Warehouse Automation Workforce Management Merchandise Financial Planning Space Management Warehouse Management Order Management Loyalty Engagement HEMA 2020 • Re-Implementation of Business Applications as SaaS • Integration via PaaS (Cloud Based Infrastructure) • Lift&Shift Cloud Migration of core applications Cloud Based Infrastructure Forecasting & Replenishment Advanced Planning & Scheduling DataLake & DataWareHouse Data Visualization OnBoarding Performance Management Learning Shelf Labelling Curtain Services Online Marketing Self- Checkout POS Cash Register Segmentation / Personalisation Product Information Management Document Asset Management B2B Warehouse Management 

 CoE Maintains core infrastructure and development platforms  Divisions are increasingly autonomous yet ‘tethered’ loosely to centralized IT  Divisions determine individual platform, architecture and technical strategies based on communicated standards  IT controls common core services and platforms and related entitlements (security, hardware, cloud environments) Center of Excellence DevOps Team DevOps Team Credits towards [email protected] for making this clear to us Federation as Central Design Principal on Organisational Level DevOps Team DevOps Team 

 CoE Maintains core infrastructure and development platforms  DevOps Teams are fully autonomous to tooling platforms  Design for Speed: simple integrations, scalable setup, no enforcement Federation as Central Design Principal for Tooling 

Learnings Organisation, Processes & Technology need to be setup on the same design principles (Conway’s Law) Explaining & enforcing simple rules is necessary (the less the better) Design for Scale & Speed 

Retail Ops Supply Chain Finance HR Finance Analytics MDM Logistics eCommerce Warehouse Automation Workforce Management Merchandise Financial Planning Space Management Warehouse Management Order Management Loyalty Engagement HEMA 2025 • ERP as a Lean & Mean Core • Fit for Purpose Applications • Scalable Platforms • Strong Domain De- Composition • Composable Enterprise IT Cloud Based Infrastructure Forecasting & Replenishment Advanced Planning & Scheduling DataLake & DataWareHouse Data Visualization OnBoarding Performance Management Learning Shelf Labelling Curtain Services Online Marketing Self- Checkout POS Cash Register Segmentation / Personalisation Product Information Management Document Asset Management B2B Warehouse Management ERP eCommerce3 

Questions? Thanks a lot for joining HEMA in this journey!