Discover how Segment achieved a 5x cost reduction by migrating from AWS Aurora to FoundationDB in this informative conference talk. Explore the journey of Segment's identity resolution system, a critical component in translating customer interactions into Personas models. Learn about the architecture behind Segment's infrastructure, the decision-making process for selecting FoundationDB, and the significant benefits realized through this migration. Gain insights into the specific operational challenges faced during the transition and the strategies employed to overcome them. Delve into topics such as CDI, identity graphs, data models, workload profiles, cluster evolution, and infrastructure setup. Understand the importance of exactly once delivery and the pros and cons of deduplication in this context. This presentation offers valuable lessons for organizations considering similar database migrations to improve performance and reduce costs.