What is Google's 30 Day Active users & how is it measured?

[born2run]

Hi I was looking thru the Google Analytics data, and I found this metric "30 Days Active Users"

I wanted to ask what's this metric and how is it calculated? Thanks much in advance!

[born2run]

Also is it same as what’s called MAU ?

[RhinoFish]

Start here, with the basics:
[support.google.com...]

This article takes a look at it from several angles, should clear it up:
[optimizesmart.com...]

Relevant discussion here:
[support.google.com...]