Explore how Walmart leverages Cassandra across multiple cloud environments in this conference talk. Discover the critical role Cassandra plays in Walmart's integrated retail operations, focusing on availability, scalability, and cost control. Learn about the implementation of Cassandra clusters that span public cloud providers and Walmart's million-core private cloud. Gain insights into the challenges and solutions for maintaining high performance and reliability while optimizing costs in a multi-cloud Cassandra deployment at one of the world's largest retailers.