Regular Expressions (also known as Regex in Google Analytics and Tag Manager) can help save time and include/ exclude data from your reports.
Regex is now supported in Google Data Studio. However, there are few changes to Regex that classifies it as RE2. RE2 was designed to be faster and more secure.
In this post I will provide you with a few Regex examples that we have created for Google Data Studio and a few differences we have noticed when compared to regular Regex.