If you want to analyze events and users across your business's website, as well as its separate apps for iOS and Android — how should you set up your account?

While the provided answer suggests using two properties, the correct Google Analytics 4 methodology for cross-platform analysis requires a different structure. Let's break down the correct approach.

Analysis of the Correct Methodology

The core purpose of a Google Analytics 4 (GA4) property is to provide a single, unified view of user interactions across different platforms. To analyze a user's journey from your website to your apps, all data must be collected within one property.

The correct account structure is: - One Property: This is the container that unifies all user data from your web and app platforms. - Multiple Data Streams: Within this single property, you must create a separate data stream for each data source. A data stream is the pipeline from your asset to GA4. For this scenario, you would need: - One web data stream for your website. - One app data stream for your iOS app. - One app data stream for your Android app.

This setup allows GA4 to de-duplicate users and map their entire journey across devices.

Analysis of Incorrect Options

• Using Multiple Properties: Any option suggesting more than one property is incorrect for this goal. Creating separate properties (e.g., one for web and one for apps) will silo your data. This makes it impossible to analyze the user journey "across" platforms, which is the specific requirement of the question. It would treat your web users and app users as completely separate audiences.
• Using a Single App Data Stream: An option suggesting only one app data stream for both iOS and Android is also incorrect, as each native app platform requires its own distinct data stream for proper configuration and measurement.