你透過 POS 系統收集的資料，可與自家網站和應用程式傳送至 Google Analytics 的資料相輔相成。以下哪項功能可用於收集事件並直接傳送至 Google Analytics 伺服器？

Measurement Protocol is a set of rules for sending raw hit data directly to Google Analytics servers. This allows you to send data from any internet-connected device or system, including POS systems, to Google Analytics, complementing data collected from websites and apps. HTTP requests are a general method for transmitting data over the web but don't specifically define the Google Analytics data structure. Modifying events refers to altering existing event data within Google Analytics, not collecting new data from external sources. Data import is used to upload historical or supplementary data files, not to send real-time event data directly from a system like a POS.