A container tag is a snippet of code placed within website pages, which, when called in the browser, loads and executes additional third party tags. The use of a single tag container prevent the need to access and change page code for each new tag.
For more details about tag issues, see third party tags and tag management.
Tag container can be self-developed by publishers and merchants or offered by tag management solutions.
According to actors and context, one may encounter different technical meanings for the tag container term.