# How Walmart Rebuilt Its Supply Chain with Real-Time Data

Page: https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-walmart-rebuilt-its-supply-chain-with-real-time-data-2
Text version: https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-walmart-rebuilt-its-supply-chain-with-real-time-data-2.md
Podcast: [The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org](https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807)
Published: 2026-06-18T19:20:11+00:00
Episode link: https://audio.fexingo.com/business/the-cto-podcast/episode-0059.mp3
Audio file: https://audio.fexingo.com/business/the-cto-podcast/episode-0059.mp3
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Duration seconds: 461

## Resource

Walmart's supply chain is the largest in the world, moving over 5 billion units annually. In this episode, Lucas and Luna explore how Walmart rebuilt its supply chain on real-time data from edge to shelf. They break down the 2019 shift from batch processing to streaming events, the use of Kafka at massive scale, and how a machine learning model called 'Eddie' predicts demand by the hour. Lucas explains why Walmart moved its inventory management from mainframes to a cloud-native architecture built on Google Cloud, and how real-time visibility reduced out-of-stocks by 16% in pilot stores. The conversation covers the technical trade-offs—why they chose Apache Beam for processing, how they handle data locality across 4,700 stores, and what happens when a hurricane disrupts the supply graph. Luna pushes back on whether smaller retailers can replicate this, and Lucas outlines the core principles that transfer. This is a deep, non-obvious look at how the world's largest retailer treats logistics as a data platform. #Walmart #SupplyChain #RealTimeData #ApacheKafka #ApacheBeam #GoogleCloud #MachineLearning #InventoryManagement #DataEngineering #TechArchitecture #BusinessAndTechnology #CTO #Logistics #RetailTech #StreamingData #EdgeComputing #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

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