If you're a digital advertiser, how do you define a tag?

A tag, in digital advertising, is a small snippet of code that is strategically placed on every page of a website. Its purpose is to collect data about user interactions, such as page views, clicks, and conversions. This comprehensive placement ensures that all user behavior across the site can be tracked and attributed, providing valuable insights for campaign optimization and measurement. Placing it only on the homepage or conversion page would limit data collection, missing crucial user journey information. While tags are code, they are typically "small" snippets, designed for efficient loading and minimal impact on website performance.