Google Tag Manager gives the facility of easily update tags on our websites with less code. Event Listeners is Main part in Google Tag Manager Event Listeners: Google Tag Manager takes the hassle out of manually tagging each link that you want to track with individual on click attributes to send events to GA. Instead, you can target links or buttons by attributes that are already on the link or by using a standardized naming structure like data attributes. Tag Manager gives Facilities like 1. Debug Options 2. User Permissions 3. Built-In Tags 4. Flexibility 5. Speed Google Tag Manager for web works via its own container tag that you place on all your website pages.