> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Lifecycle of a multiplayer server build region

> Understand the Initialized, Deploying, Deployed, and Deleting states of a PlayFab multiplayer server build region and how VMs transition between them.

A build region can exist in one of the following states:

* **Initialized**: The PlayFab multiplayer service has recorded the configuration for the region.
* **Deploying**: A small number of VMs are being provisioned in the region in order to validate the build.
* **Deployed**: The initial set of VMs have all completed loading the game servers and at least one game server has reported a **StandingBy** status (via the `ReadyForPlayers` API call in [GSDK](/services/playfab/multiplayer/servers/integrating-game-servers-with-gsdk)).

<Note>
  Even though a build region may configured for say 50 standBy servers, a build region will be marked as **Deployed**, even if only one game server has reported **StandingBy**.
</Note>

* **Deleting**: The region is marked for deletion. All VMs are being de-provisioned.

The transitions between these states are depicted in the following image and described below:

<img src="https://mintcdn.com/microsoft-4404708b/U1LR64ZWxo45eXwl/images/playfab/multiplayer/servers/tutorials/multiplayer-build-region-status.jpg?fit=max&auto=format&n=U1LR64ZWxo45eXwl&q=85&s=b0fed07f67c7c2a9057f16f95522729a" alt="Multiplayer - Build Region Status" width="1182" height="551" data-path="images/playfab/multiplayer/servers/tutorials/multiplayer-build-region-status.jpg" />

1. **Initialized -> Deploying** : **StandBy** servers have been configured to be **> 0**. A few VMs are being provisioned in the region, and the build is being validated on those VMs (propping the assets and ensuring game server can reach StandingBy state).
2. **Deploying -> Deployed** : At least one game server in the region has reached a **StandingBy** state, thus validating the build (for that region).
3. **Deploying -> Unhealthy**: One of the following occurred:
   * All the initial set of VMs (from Step 1 above) are deemed **Unhealthy**. Some reasons include:
     * None of the game servers have sent a heartbeat via [GSDK](/services/playfab/multiplayer/servers/integrating-game-servers-with-gsdk) for more than 10 minutes after being started. This usually indicates that the server is crashing, and you will see a **NoServerHeartbeat** health status for each VM in the region.
     * The PlayFab Multiplayer Agent itself is crashing, or not being initialized on the VM (rare occurrence). Essentially the multiplayer service has not received a heartbeat from the Agent for over 10 minutes.
   * None of the VMs have reached a **Running** state (mostly stuck in loading assets) for more than 90 minutes.
   * None of the game servers have reached a **StandingBy** state for more than 90 minutes (although they are sending a heartbeat). This indicates an issue during game server initialization.
4. **Deploying -> Deleting**: This state transition is uncommon, and occurs when the developer requests to remove a region while it is still deploying.
5. **Deployed -> Deleting**: The region was removed from the build configuration. Removing a build is equivalent to removing each region from it (as far as build region status is concerned).
6. **Unhealthy -> Deleting**: The region was removed from the build configuration. Removing a build is equivalent to removing each region from it (as far as build region status is concerned).

<Note>
  * Start and Deleted states are internal to the system and are not exposed. - If the number of standby servers for a region is configured to be **0**, the region will remain in the **Initialized** state. - In rare unexpected cases (outages), we might see a transition from **Deploying** to **Unhealthy** for a brief period.
</Note>


## Related topics

- [Lifecycle of multiplayer server builds](/services/playfab/multiplayer/servers/multiplayer-build-lifecycle.md)
- [Lifecycle of a multiplayer server](/services/playfab/multiplayer/servers/multiplayer-game-server-lifecycle.md)
- [PFMultiplayerServerBuildRegion](/services/playfab/api-references/c/pfmultiplayerservertypes/structs/pfmultiplayerserverbuildregion.md)
- [PFMultiplayerServerBuildSummary](/services/playfab/api-references/c/pfmultiplayerservertypes/structs/pfmultiplayerserverbuildsummary.md)
- [Deploying PlayFab multiplayer server builds](/services/playfab/multiplayer/servers/deploying-playfab-multiplayer-server-builds.md)