你正在協助某家線上租車公司建立新的廣告活動。該公司使用 Campaign Manager 360，且想透過 Google 解決方案評估應用程式轉換次數。他們對程式設計駕輕就熟。 請問哪種解決方案可以滿足他們的需求？

Google Analytics 4 (GA4) is the correct solution because it is Google's next-generation measurement solution designed for app and web analytics. It offers robust capabilities for tracking app conversions and user behavior across platforms. Since the company is comfortable with programming, they can leverage GA4's flexible data model and SDKs to implement custom event tracking for their specific conversion goals within their app. Third-party SDKs are a general category and while some might track app conversions, GA4 is a Google solution specifically designed for this purpose and integrates well with Campaign Manager 360. Google Play Install tracking is too limited as it only tracks app installs from Google Play, not in-app conversions or conversions from other sources. Looker Studio is a data visualization tool, not a data collection or measurement solution for app conversions.