Google Tag Manager Basic Concepts and Implementation Workflow

Google Tag Manager (GTM) is a free service by Google that is used to configure different analytics, conversion tracking and remarketing pixels (Universal Analytics tracking code, Facebook pixel, AdRoll pixel, etc.)

If GTM is not used all these codes and pixels should be added to the source code of the website. This approach makes it very difficult to implement the pixels (only technical team can do this), difficult to debug (tools are available only for few systems like facebook, twitter and bing) and difficult to update (source code changes are required).

Tracking implementation for Single page applications (SPA)

Single-Page Applications (SPA) become more and more popular. They are built using Ember, React, Angular, Backbone, Meteor or something similar.

Bad news about SPA is that adding default Universal Analytics tracking code to such applications will not result in having any valuable data in the Google Analytics account. The reason is that SPA does not generate any pageviews by defaults and pageview hits are not send to Universal Analytics. If no customization is applied to the analytics tracking code one will have sessions with only one pageview and extremely high bounce rate.