Michael Crosby developed a RotatingAddressAllocator for the apple/containerization repository, focusing on efficient management of UInt32 network addresses. He implemented a FIFO allocation strategy to maximize address reuse while preventing collisions, addressing scalability and determinism in high-churn container networking environments. The allocator was integrated into NetworkAddress+Allocator.swift and shipped with comprehensive unit tests that covered allocation logic, reuse scenarios, boundary conditions, and error handling. Working primarily in Swift, Michael applied his expertise in concurrency, memory management, and system programming to deliver a robust solution. The depth of testing and integration demonstrated a thorough, production-ready approach to resource allocation challenges.