ClickHouse has migrated its infrastructure from x86-based instances to AWS Graviton processors, leveraging the advantages of ARM architecture for better price-performance and energy efficiency. The migration aimed to improve performance without increasing costs. ClickHouse achieved significant improvements in query performance, with up to 76% better performance on certain queries, and reduced operating costs. The company has comprehensive AArch64 support, including automated builds, full functional test runs, JIT compilation, ARM Neon optimizations, query profiling, and introspection tools. The migration involved careful planning and execution, including compatibility assessments, benchmarking strategies, risk analysis, and mitigation measures. ClickHouse's journey with ARM architecture demonstrates the potential of ARM-based solutions for data-intensive workloads.