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analytics-dictionary / term / tracking & measurement

Data stream

A data stream is a source of data flowing into a GA4 property, such as a website, an iOS app or an Android app.

Written by Reflective Data experts · updated Oct 5, 2026

Each stream has its own measurement ID and settings, including enhanced measurement and allowed domains. One property can combine web and app streams to get a cross-platform view.

Plan streams carefully: mixing unrelated sites in one property makes reporting harder to interpret.

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Enhanced measurementEventGoogle Analytics (GA4)

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