> ## 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.

# Concepts

> Reference and concepts for multiplayer sessions and matchmaking in the XBOX Game Development Kit (XBOX Services). Includes concepts and API guidance.

Explore concepts topics for XBOX game development.

<CardGroup cols={2}>
  <Card title="Configuring the multiplayer service" icon="users-line" href="/services/xbox-services/multiplayer/concepts/live-configure-the-multiplayer-service">
    This topic describes how to configure the Multiplayer service, which includes configuring session templates, SmartMatch hoppers, and custom…
  </Card>

  <Card title="Cross-network multiplayer" icon="network-wired" href="/services/xbox-services/multiplayer/concepts/live-console-xr007-mmo-example">
    This topic describes cross-network functionality and flow in a massive multiplayer online (MMO) game.
  </Card>

  <Card title="Cross-network multiplayer" icon="code" href="/services/xbox-services/multiplayer/concepts/live-console-xr007-multiplayer-example">
    This topic describes an example scenario that demonstrates cross-network functionality and flow in a traditional multiplayer online battle…
  </Card>

  <Card title="Introduction to calling the multiplayer" icon="circle-info" href="/services/xbox-services/multiplayer/concepts/live-intro-calling-mp-directly">
    2015 Multiplayer optimizes the direct use of Multiplayer Session Directory (MPSD) and game sessions.
  </Card>

  <Card title="Migrating an arbiter" icon="lightbulb" href="/services/xbox-services/multiplayer/concepts/live-migrating-an-arbiter">
    During a 2015 Multiplayer session, you might need to select a new arbiter by using arbiter migration.
  </Card>

  <Card title="Multiplayer concepts" icon="users-line" href="/services/xbox-services/multiplayer/concepts/live-multiplayer-concepts-nav">
    This section describes how to configure and implement XBOX services Multiplayer services.
  </Card>

  <Card title="Multiplayer concepts" icon="users-line" href="/services/xbox-services/multiplayer/concepts/live-multiplayer-concepts">
    The Multiplayer system includes a multiplayer session, Multiplayer Session Directory (MPSD), SmartMatch matchmaking, and Quality of Service…
  </Card>

  <Card title="Multiplayer roles" icon="users-line" href="/services/xbox-services/multiplayer/concepts/live-multiplayer-roles">
    This topic describes how to define player roles in XBOX services multiplayer.
  </Card>

  <Card title="Multiplayer session browse" icon="people-group" href="/services/xbox-services/multiplayer/concepts/live-session-browse">
    Use this topic to enable your title for users to query a list of open multiplayer game sessions that meet their specified criteria by using…
  </Card>
</CardGroup>

## See also

* [Chat](/services/xbox-services/multiplayer/chat/index)
* [Invites](/services/xbox-services/multiplayer/invites/index)
* [Matchmaking](/services/xbox-services/multiplayer/matchmaking/index)
* [Mpa](/services/xbox-services/multiplayer/mpa/index)
* [Mpm](/services/xbox-services/multiplayer/mpm/index)
* [Mpsd](/services/xbox-services/multiplayer/mpsd/index)
* [Overviews](/services/xbox-services/multiplayer/overviews/index)


## Related topics

- [Concepts](/services/xbox-services/multiplayer/invites/concepts/index.md)
- [Matchmaking concepts](/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-concepts-nav.md)
- [Multiplayer concepts](/services/xbox-services/multiplayer/concepts/live-multiplayer-concepts-nav.md)
- [Reputation concepts](/services/xbox-services/community/reputation/concepts/live-reputation-concepts-nav.md)
- [Invites concepts](/services/xbox-services/multiplayer/invites/concepts/live-invites-concepts-nav.md)