How to add content group to Google Analytics

Step 1: Add code to web pages

window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  topic: 'kubernetes',
});

// code snippet to install googletagmanager

Step 2: Create Variables

Variables tab:

New -> Data Layer Variable -> Use the same key (e.g. topic) in Data Layer Variable Name field.
New -> Google Tag: Event Settings -> Use content_group in Event Parameter field -> use the reference of the Data Layer Variable in the Value field.

Step 3: Create Triggers

The Message or the dataLayer push may happen after initialization, so we need to create a trigger that happens at a later stage, e.g. DOM Ready, Window Loaded.

New -> Select DOM Ready type.

Step 4: Create Tags

New -> Google Analytics -> Google Tag
- Tag ID set to Measurement ID (e.g. G-XXXXXXX)
- Shared event settings: set Event Settings Variable to the Google Tag: Event Settings set in Step 2.
- Trigger set to the trigger created in Step 3.
New -> Google Analytics -> Google Analytics: GA4 Event
- set Measurement ID (e.g. G-XXXXXXX)
- Event Parameters: set Event Settings Variable to the one created in Step 2.