What does a tag do and when does it run?
Your site loads a container that groups tags and rules. A trigger tells a tag when to run, such as after the app confirms that a trial signup succeeded.
On paper, draw a visit, a failed form submission and a successful signup. Mark only the successful signup as eligible to send the signup event. List the receiving service and the specific event data it needs.
Does Preview keep events away from live reporting?
Preview lets your browser run the draft tag setup on the connected site. It can show which tags ran and what they sent. Check the actual destination before opening a preview that could send anything.
Stay on paper unless the site and container are disposable, event destinations are verified test-only or disabled, and all inputs are fictional. Review what should happen when someone declines optional measurement, and verify the actual behavior before publication.
What is free, and who can publish changes?
Standard Tag Manager is free. Services receiving events and any infrastructure they use can have separate costs. Container permissions include editing, approval and publication.
Keep container access with your business. Decide who can publish to the real site, and verify the intended environment before making a saved version active.
What does a container export contain?
Google Tag Manager can export the container configuration as JSON, a text file containing settings such as tags, triggers and variables. The file does not include reports from services that received events.
Before reusing a container, review its destination IDs, domains and dependencies. A copied configuration can still point to the old account. Confirm the intended test destinations before running it.