S2S (Server-to-Server) Integration

Use cases for S2S integration

Server-to-Server (S2S) integration is a method of tracking conversions and user actions by sending data directly between backend systems, without relying on client-side or app-level SDK tracking. S2S is commonly used in scenarios where traditional app-based tracking is not feasible or practical, including:

• Web-based flows: conversions that occur on websites rather than within a mobile app

• Backend-driven systems: transactions or events triggered server-side, such as subscription activations or purchase confirmations

• Partner platforms and affiliate marketing: tracking leads, clicks, and conversions from third-party networks

• Payment processing: ensuring accurate reporting of completed transactions that may bypass the app interface

• Cross-platform attribution: connecting user actions across web, app, and other digital channels for unified performance measurement

For mobile marketers, S2S provides a flexible alternative to SDK-based tracking, allowing them to measure conversions that occur outside the app environment while maintaining data integrity and accuracy.

Advantages of S2S tracking

• Higher reliability: data is transmitted directly between servers, reducing dependency on user devices.

• Resistance to ad blockers: server-side communication is not affected by ad blockers or client-side tracking limitations.

• Reduced impact of network issues: server-based data transfer is less sensitive to temporary device or connection instability.

• Greater data control: marketers have more flexibility over data formatting, structure, and validation rules.

• Improved reporting accuracy: direct server communication helps ensure more consistent and trustworthy attribution and analytics data.

Limitations and considerations

While S2S integration provides flexibility and robustness, it also comes with certain limitations:

• Less granular insights: S2S may not capture detailed in-app behavior or device-level context as SDKs do

• Complex setup: proper configuration and ongoing validation are required to avoid data discrepancies or attribution gaps

• Privacy compliance: transmitting user-related data between servers must adhere to data protection regulations, such as GDPR or CCPA

• Potential delays: depending on server processing and communication, event reporting may not be as immediate as client-side tracking

Marketers should weigh these factors when designing tracking strategies, often combining S2S and SDK-based solutions to balance accuracy, granularity, and reliability.