A single code snippet placed on a website, which holds other tracking codes or pixels and information on when to “fire” those other tags and pixels. The container tag code should be placed on every page of a website and allows for a single tracking code to be used, rather than placing many individual tracking codes on a website. Using a container tag, the individual tags are added via a separate user interface (UI) instead of editing the website’s code. A popular example of a container tag is Google Tag Manager.