The main purpose of Google Analytics is to track, store and generate reports about your website, such as:
• How many people visited your website yesterday?
• Which countries were the visits made from?
• How many pages did they visit per session?
• How many visitors bounced from your bahamas phone number library website (without taking any action)?
The only way Google Analytics can track these user interactions is with the help of tracking code (also known as the GA JavaScript snippet), which must be placed on every page of your website.
When an interaction occurs on a site (for example, a page view), a JavaScript snippet sends the relevant data to Google Analytics.
If you just want to place the GA tag on all websites and track general information like page views, bounce rate, session duration, referrals, etc., then that’s fine.
Maybe you want to track how many people use a certain feature on your website/app. Or maybe you’re interested in tracking sales, huh? In that case, you’ll need to add special tags, which are Google Analytics events that send data only when a visitor completes a certain action on your website. A good example here would be a form submission.
Google Tag Manager
Google Tag Manager makes it easy to manage this tag mess by letting you define rules for when certain tags fire.
Google Tag Manager does not replace Google Analytics. Instead, it helps users easily add the Google Analytics tracking code (tag) to a website, deploy GA event code snippets, and define rules for when each code should be triggered.
Before GTM, GA tracking codes usually had to be hard-coded on each page by a web developer. Having hundreds of events when it comes to maintaining/updating them is very difficult. However, Google Tag Manager solves this problem because all your tags are stored in one place – your GTM account.
