Explore the challenges of implementing DevOps at a global scale in this 45-minute conference talk by Ryan McGuinness, Principal Architect at @WalmartLabs. Discover how Walmart, one of the world's largest retailers, leverages a diverse array of Open Source technologies to build a sustainable, customer-focused global platform. Learn about the intricacies of managing Java, Java EE, Node.js, and big data systems in a large-scale retail environment. Gain insights into DevOps practices, scalability, sustainability, and the importance of company culture in driving innovation. Delve into topics such as standards, tool selection, Agile vs. Waterfall methodologies, training, Open Source adoption, metrics, and specific Java DevOps practices. Understand the balance between development and operations, and the crucial role of feedback in maintaining a customer-centric approach.