Google Analytics is a powerful measurement tool. But, it does have its limitations.
While it can tell you a ton about how people engage with your website, you can't always drill down and unveil who is completing those actions as lots of its data is anonymized.
Good news is there's a way to overcome that: Custom dimensions.
So in this report, we share exactly what a custom dimension is, how to create one, and 18 examples of custom dimensions you can use to understand your site's performance: