# Manage and configure matchmaking

> Learn how to configure matchmaking rules, Quality of Service, player segmentation, backfill, and party matchmaking behavior.

Configure matchmaking features to control how players are matched together in your game.

| Topic                                              | Description                                                                                                           |
| :------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------- |
| [Matchmaking rules](./mm-rules.md)                 | Create rules that control how players are matched together based on their custom data and Quality of Service results. |
| [Rule relaxations](./rule-relaxations.md)          | Relax matchmaking rules over time to increase the chance of finding a match when player populations are low.          |
| [Quality of Service](./mm-qos.md)                  | Use Quality of Service results to match players in regions with acceptable connection quality.                        |
| [Player segmentation](./mm-player-segmentation.md) | Divide players into separate pools based on game modes and custom attributes to optimize matching.                    |
| [Backfill](./mm-backfill.md)                       | Allow players to join matches that have already started and keep servers full as players leave.                       |