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Dissecting the Switch 2 GameChat Backend: Multi-Region SFU and DynamoDB Consistency Trade-offs

2026-06-26T20:30:00+09:00

Background

A public backend talk from Nintendo is a rare thing. At AWS Summit Japan 2026, session CDN221 “The Technology Behind GameChat” (「ゲームチャットを支える技術」) walked through the service design behind GameChat, a built-in feature of Nintendo Switch 2. The speakers came from the System Development Department at Nintendo Systems Co., Ltd. (ニンテンドーシステムズ株式会社). That affiliation itself is worth noting: Nintendo Systems is not Nintendo proper but a joint venture Nintendo and DeNA founded in 2023, mainly responsible for developing the systems behind Nintendo’s online services.

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