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Sony-DroidKaigi2026
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ソニー株式会社
September 02, 2026
Technology
1.1k
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Sony-DroidKaigi2026
ソニー株式会社
September 02, 2026
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Transcript
None
53.1 %
2x bet on early frameworks
93.9 %
None
2021 2022 2023 2024 2025
2021 2022 2023 2024 2025
None
None
None
KMP REACT NATIVE For Biz logic For UI
None
Android Studio Obj-C Xcode VSCode
None
The ReactNative TAX
g Kotlin Typescript Objective-C 53.1% 17.2% 50% Swift 14.7% Others
13.0% 2% 100%
but…
new tech = risk?
None
how?
ACT II Small bets BIG Moves
01 Experiment first 02 Bet asymmetrically まず実験する ⾮対称に賭ける 03 Build
a boundary 境界を作る
None
Hardware
Platform Background execution
None
2 week checkpoints
working software
None
Fallback The bet
we chose alpha
InvalidMutabilityException
Main-Thread
No issues in production
Lesson 1 Don’t ask to adopt ask to experiment 導入の前に、まずは実験
01 Experiment first 02 Bet asymmetrically まず実験する ⾮対称に賭ける 03 Build
a boundary 境界を作る
01 Experiment first 02 Bet asymmetrically まず実験する ⾮対称に賭ける 03 Build
a boundary 境界を作る
2023 + J2ObjC + Native KMP + RN
source: http://blog.jetbrains.com/kotlin/2023/05/compose-multiplatform-for-ios-is-in-alpha/
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 2024 ✅ Aug Dec Jan Feb Mar Apr May
Jun ... Oct
Fallback The bet SwiftUI + Jetpack Compose CMP
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
Android
iOS
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
2023 Aug Dec 2024 Jan Feb Mar Apr May Jun
... Oct
we chose beta
None
None
Lesson 2 Make the standard your fallback フォールバックとして標準を準備しておく
are we done?
? 2021 2022 2023 2024 2025
? 2021 2022 2023 2024 2025
01 Experiment first 02 Bet asymmetrically まず実験する ⾮対称に賭ける 03 Build
a boundary 境界を作る
01 Experiment first 02 Bet asymmetrically まず実験する ⾮対称に賭ける 03 Build
a boundary 境界を作る
J2ObjC + Native KMP + RN + 7 years 2
years HW driven Agile Jenkins CircleCI
Domain Driven Design
None
Fallback The bet
All comms through boundary 全ての通信は境界を介して行う Keep boundary simple 境界はシンプルに保つ Code:
≤1%. One owner コードは1%以下に
0.2%
J2ObjC + Native KMP + RN CMP + Native +
J2ObjC + HW driven 8 weeks 8 weeks Jenkins CircleCI Github Actions
Lesson 3 Build a boundary don’t rewrite 境界で分けることで書き換えを避ける
Don’t ask to adopt. Ask to experiment 導入の前に、まずは実験 Industry standard
= your fallback フォールバックとして標準を準備しておく Build a boundary, don’t rewrite 境界で分けることで書き換えを避ける
ACT III Results
Before Kotlin Typescript Objective-C 53.1% 17.2% 50% Swift 14.7% Others
13.0% 2% 100%
Before Kotlin Typescript Objective-C 53.1% 17.2% Swift 14.7% 50% After
Kotlin Swift 93.9% Others 13.0% 2% 100% Others 6.0% 0.1%
MILLIONS INSTALLS, GLOBALLY, BOTH PLATFORMS
None
None
None
C M P + N AT I V E +
J2OBJC 8 WEEKS RELEASES
source: https://ifdesign.com/en/winner-ranking/project/sony-sound-connect/758473
None
None
we made a boundary 境界で分けたから we kept a way back
戻れるようにしたから we started small 小さく始めたから
None
what is your small bet? あなたの⼩さな賭けは、何ですか
Small bets. BIG moves. ⼩さく賭けて、⼤きく動かす
None