AdAttributionKit：SKAdNetwork 升级的新归因框架

SKAdNetwork：从0到1

AdAttributionKit

AdAttributionKit 在 iOS 17.4 以上生效。

AdAttributionKit 是在建立 SKAdNetWork 基础上升级的新的广告归因框架。
新支持的功能如下：

1. 支持除AppStore外的商店应用的归因
2. 支持买活的归因，以及可以深度链接到已安装的App
3. 引入新的开发者模式测试，大量缩短归因回传周期，便于测试

衡量人群差异（Ensure Crowd Anonymity）

为了保护隐私，人群数量增大，才能获取到更全的的归因数据

AdAttributionKit 全新API

与 SKAdNetwork API 可以共存，以最后的展示的为准。
归因回传格式字段有些许变化：

对比SKAdNetwork字段：

Advertised item ID：The advertised app’s identifier. Called app ID in SKAdNetwork.
Conversion type. Identifies whether the installation was a redownload. Advertisers can use this to evaluate the success of re-engagement campaigns. Called redownload information in SKAdNetwork.
Publisher item ID：The specific app where the advertisement was shown and from which an app installation occurred. This allows advertisers to identify which app should be credited with initiating the download. This value is conditional and only displays when privacy thresholds are met. Called source app ID in SKAdNetwork.
Source identifier： The source identifier the ad network provided when displaying the ad. Source identifiers contain information about the ad campaign.
Conversion values：Advertisers can configure conversion values based on their preferences, with each representing a different type of engagement. For example, they might configure three conversion values to capture when someone finished an onboarding tutorial, made an in-app purchase, or purchased a subscription. This information can be used alongside the publisher item ID and source identifier (when applicable) to understand the quality of the campaign. This value is conditional and only displays when crowd anonymity thresholds are met.

参考文献：

Apple AdAttributionKit Document
WWDC2024：Meet AdAttributionKit
Measuring ad performance with AdAttributionKit