> ## 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 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="Matchmaking concepts" icon="shuffle" href="/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-concepts-nav">
    This section describes how SmartMatch matchmaking groups players based on their information and the matchmaking request for the players who…
  </Card>

  <Card title="Using smartmatch matchmaking" icon="users-line" href="/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-how-tos">
    a id="top"/a
  </Card>

  <Card title="Target session initialization and QoS" icon="people-group" href="/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-target-session">
    This topic describes how a title confirms that enough players have joined and can connect when they're matched into a target session.
  </Card>
</CardGroup>

## See also

* [Config](/services/xbox-services/multiplayer/matchmaking/config/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)