If you're a digital marketing consultant, how would you describe the Google tag to your new advertiser?

The Google tag is a JavaScript framework, also known as gtag.js, that you add to your website to send data to Google Analytics and Google Ads. It provides a unified tagging solution, streamlining the process of collecting measurement data. It is not exclusively for Google Shopping; it's a general-purpose tag. While it uses JavaScript, describing it simply as a "JavaScript framework" (gtag.js) is the most accurate and concise technical description for an advertiser. It does not replace Tag Manager; rather, it works with it, and Tag Manager is not less accurate. The Google tag itself is not used to deploy and modify other tags; that's the function of Google Tag Manager.