Since GMT (Google Tag Manager) started, I have no idea why "experts" are using solely GA (Google Analytics) for complicated stuff anymore. I often hear that "There would no be sail over the website if I don't use GA."
Is Google Analytics enough?
It's like taking Ford Model T from 1908. y. and going to German Nürburgring to compete. Sound crippling and funny? Yes, it is.
GTM is the ideal tool and centralized spot to get various data from a website and send them to GA and Google Ads. There is more to it, but I am trying to explain GTM.
It completely obscured some GA functionalities and made them unnecessary, like Tags. Naturally, GA will track data and store it, but setting up marketing tags is a headache. There is a solution: Google Tag Manager.
Tracking Users via GTM
It is way easier to organize triggers, tags, and variables. To track what the user is doing on the website, where he clicked. Did he started populating a contact form and didn't finished. Did he not complete buying process of a product even he placed it in the shopping cart.
It is excellent for conversion tracking too. Connecting tags with Google Ads is the fastest way to track desired events on the website. GTM is connectable to the HubSpot (ex: for remarketing) or inserted in any important tool for marketing.
You can import GA code, Facebook Pixel, Twitter Ads tracking code, etc. There is no limit. The good side is it is all in one place, easy to control and set.
Google Data Studio
GDT (Google Data Studio) is a fantastic tool for interactive dashboards and beautiful reports. How beautiful they can be, depends on the skills. These reports can be effective for making crucial businesses decisions.
So, no, you don't watch whole day Google Analytics since we have GTM. It is just a "fire and forgets" tool.