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The “Live” Google Tag Manager (GTM) snippet is generally used to manage different environments on a website during development stages, such as testing tags on a staging site before pushing them live. This enables one to control what set of tags fire on each environment. For many, using the ‘default’ GTM snippet for their live site suffices since it automatically tracks the current container version that’s running. However, if one needs to manage multiple development stages or have additional control over when certain tags are fired, then the “Live” environment and its specific GTM snippet would be useful.
