Sergey Shcherbakov developed support for an optional secondary read pool in AlloyDB cross-region replication within the GoogleCloudPlatform/cloud-foundation-fabric repository. He designed and implemented Terraform-based infrastructure as code to enable a secondary read pool alongside the primary pool, enhancing data access latency and availability for distributed workloads. Sergey updated configuration surfaces and module outputs to expose and manage the new pool, ensuring seamless integration with existing module structures. His work focused on cloud architecture patterns that promote resilience and scalability, aligning with established practices to minimize disruption. This feature advanced the module’s ability to support fault-tolerant, scalable AlloyDB deployments.