Here’s a clear breakdown of why Branch’s server-to-server (S2S) integration often has less data discrepancy than SDK-based tracking:
🔍 Key Differences: SDK vs. S2S Integration
| Aspect | SDK Integration | Server-to-Server (S2S) Integration |
|---|---|---|
| Data Collection | Tracked from the user’s device (app side) | Data sent directly from backend server to Branch |
| Reliability | Depends on user/device behavior | Controlled and consistent from server |
| Network Dependency | Affected by user connectivity, battery saver, or OS-level restrictions | Not dependent on client-side constraints |
| Attribution Accuracy | May be affected by OS limitations (e.g. iOS ATT) | Can match based on deterministic server-side events |
⚙️ Why S2S Has Less Discrepancy
1. More Reliable Delivery
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SDK events can be blocked or delayed due to:
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Network failures
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App being killed before event is sent
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Battery/data saving features
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S2S ensures events are delivered even if the app is closed or offline at the time.
2. Better Control & Validation
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With S2S, your backend controls what and when data is sent.
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This eliminates issues like:
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SDK not firing
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Misconfigured in-app events
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Duplicate or dropped events
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3. Less Impact from OS Restrictions
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On iOS, SDK data may be limited due to App Tracking Transparency (ATT) or background restrictions.
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S2S avoids these because it sends data independent of user permissions (as long as it’s privacy-compliant and anonymized).
4. Accurate Revenue/Transaction Tracking
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When tracking deposits, purchases, or game events, S2S sends confirmed server data.
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SDKs can miss or inaccurately capture monetary events (e.g., if the app crashes before an event is fired).
5. No Dependency on App Version
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If you’re relying on SDKs, you need to ensure users are on the latest app version to get accurate tracking.
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S2S works regardless of user’s app version, reducing discrepancies caused by outdated SDKs.
✅ When to Prefer S2S:
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You need high accuracy for revenue and conversions (e.g., first deposit, purchase).
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You already track key events on your server (gameplay, wallet, transactions).
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You’re integrating with ad networks for postbacks or LTV tracking.
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You want to minimize SDK bloat or reduce user-side dependencies.
If you’re using Branch for user acquisition in a gaming app (like you are), a hybrid setup (SDK for installs + S2S for post-install events like deposit) is usually best.
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