Remote Build Execution (RBE) for Bazel is now available in private beta on Bitrise, allowing select workspaces to enhance Bazel builds with scalable, parallelized execution on both Linux and macOS. This advancement is particularly beneficial for teams handling large, complex codebases, as it distributes the build and testing processes across a remote cluster, significantly reducing build times and freeing up local resources. A benchmark test on the Envoy proxy showed a remarkable 13x speedup with 20 RBE workers, illustrating the system's power and scalability. Users can get started by creating worker pools, choosing OS images, and setting worker limits, while ensuring that their builds are routed through RBE by updating configurations. Bitrise's integration of its Build Cache, RBE workers, and CI runners within the same data center fabric aims to provide ultra-low latency, improve reliability, and maintain data sovereignty, all supported by a custom-built autoscaler for efficient resource management.