Google Tag Manager is a great tool to help see what is going on in your site. It helps you set up goals to check people are looking through your whole site and seeing where they’re leaving. You ever get an email about you left stuff in your cart? Most likely they have a tag on to let them know, so they can send you an email about it. This is a sneaky way to let the business know who the people who were going to buy something but change their mind last minute to see if they can still get you to buy something. This is a great way, for businesses to lock up new people to their website.
In the video, we can see a clear break down on how to use Google Tag Manager in the most updated version of the platform.