This talk will cover the process of migrating a large-scale, multi-language Apache Solr infrastructure from on-premise servers to AWS cloud infrastructure. The presentation will detail the challenges and best practices involved in the migration, including considerations for instance sizing, data transfer, configuring autoscaling and load balancing, while maintaining optimal search performance. The talk will also highlight the benefits of the migration, including increased scalability, cost savings, and improved disaster recovery capabilities. Real-world examples will be used to illustrate the process, building blocks and tools used during the migration and the talk will conclude with a discussion of future optimizations.