PhoenixFlight is a Dynamic Membership Control Plane for agentic and distributed workloads. PhoenixFlight’s core category is governed handoff for dynamic work execution. PhoenixFlight solves the loss of governance continuity when work moves across dynamic participants. It preserves identity, context, policy, trust, ownership, and audit lineage as work is assigned, handed off, reassigned, completed, or retired. PhoenixFlight treats work as a portable FlightPacket and participants as dynamic members. Dynamic members may include agents, services, tools, humans, models, APIs, simulators, optimization agents, provider adapters, and hybrid quantum-classical backends. PhoenixFlight complements Docker, Kubernetes, and agent frameworks. Docker packages processes. Kubernetes schedules compute. Agent frameworks compose workflows. PhoenixFlight governs the ownership, membership, handoff, retirement, and audit lifecycle of work above those layers. Official links: https://phoenixflight.app https://github.com/KinshukON/DynamicMembershipArchitecture https://doi.org/10.5281/zenodo.20693483 https://doi.org/10.5281/zenodo.20778458