Although GA and GA4 are two different versions of the Google Analytics platform itself, the latter dominates the former by length. Here’s a comparative analysis for your understanding.
1. Data Model
The flat data model used in GA has quite a few limitations. Over time, it becomes difficult to measure how users interact with your site. That’s because each interaction on your website is taken as an independent hit. So it’s suitable for simple sites which have less interactions. To track high interactions, one would need additional plugins for support.
However, GA4 has introduced a hierarchical data model that measures user interaction based on events. This means it’s a good fit for all types and sizes of websites, compared to its counterpart.
2. Data Collection
GA4 comes with more features that make data tracking easier and highly accurate.
Talking about GA, it has a centralised server for data collection that sends data via tracking codes. Any glitches or wrong implementation of the code can lead to data loss.
Meanwhile, in the case of GA4, the server continues to collect data, but each tracking code is independently connected to the server. So, in case there’s any downtime on the server, or even if the code is not implemented correctly, only data from the specific implementation will be affected. In other terms, GA4 minimizes the risk of data loss compared to GA.
3. Privacy
GA4 has been designed to keep privacy as the top corner. This new updated version of GA anonymizes collected data and doesn’t collect personally identifiable information (PII).
However, in the case of GA, there exist anonymization features, but you’re required to turn it on by yourself.
If you don’t turn on the feature by default, Google Analytics automatically collects PII like name, email address, and phone number. Hence, indirectly, privacy took a back seat in this version.
4. Event Tracking Set-up And Automation
GA4 event tracking is more flexible than its predecessor. While in Universal Analytics, the tracked events are based on category, action, label, and value schema, it’s quite different in GA4. The 4th edition captures events in four categories
- Automatically collected events
- Enhancement measurement events
- Recommendation events
- Customised events
5. eCommerce Tracking
In terms of eCommerce capabilities, GA is the winner, as it offers a long list of tracking details as compared to the new Google Analytics version. This is because, Google says, GA4 is not ready for commercial consumption as of yet. However, they’re working to develop this capability and it is in their future release pipeline.
6. Engagement Metrics
GA4 has more attributes to its engagement metric including,
- Engaged session
- Engagement session per user
- Engagement rate
- Engagement time
Each of these metrics is very useful in tracking users more accurately in both the websites and apps. But, these metrics are not present in GA. Universal Analytics allows you to track metrics like page views and bounce rate which are not present in GA4.