你的客戶想使用自訂欄，來定義及查看 Google Ads 資料的特定部分。在 Search Ads 360 中，他們應使用哪兩種自訂欄？

The correct answer is Custom formula columns and Custom conversion columns. Custom formula columns allow you to create new metrics by combining existing metrics and functions, enabling you to define and view specific calculations relevant to your client's Google Ads data. Custom conversion columns let you report on specific Floodlight activities or groups of activities, providing a tailored view of conversion data that might not be available in standard columns. Custom dimension columns are used for reporting on custom dimensions from Google Analytics, not directly for defining and viewing specific parts of Google Ads data. Custom label columns are for organizing campaigns, ad groups, ads, and keywords with custom labels, not for creating new data views or calculations.