> For the complete documentation index, see [llms.txt](https://app.developers.karte.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://app.developers.karte.io/app-faq/app-faq-variables-like-feature-flag.md).

# 設定値配信をFeature Flagのように扱えますか？

設定値配信でtrue/falseの値を配信することで、セグメントやディメンションの条件を満たした場合に限定したFeature Flagのように扱えます。

配信された設定値のフラグによって、アプリ側で特定の機能を操作できます。

![設定値で boolean の値を選択](https://2393392196-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FH4XuUv5EgXiqltJXSiRd%2Fuploads%2Fgit-blob-a4789d2593061c334774739e5068025867e92168%2F5bdb9e5d884657fbc4dea9a30aaf256f4d5bbc1e239b8513f12aab9134f2cde9-_2025-03-07_15.10.49.png?alt=media)

![設定値で boolean の値を選択後](https://2393392196-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FH4XuUv5EgXiqltJXSiRd%2Fuploads%2Fgit-blob-01a8e71d1756ba8fa5524ae24a6ef9fe49e3b8d3%2F8226de527fc51f3a67f487d5a476b3cf4fbe656272595123863081e89e090d3c-_2025-03-07_15.11.39.png?alt=media)

## 設定値配信をFeature Flagのように扱う例

* 新UIの提供において、50%のユーザーのみに新UIの表示フラグを配信して、従来のUIと比較しながら A/B テストすることで、行動データをもとに最適なUIに調整する
* 新機能の提供において、最初は10%のユーザーのみに新機能の表示フラグを配信して、徐々に100%に拡大することで、大規模な不具合のリスクを抑えながら、安全に導入する


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