We get this question very often as well- what is a difference between key performance indicator (KPI) and metric?
In nutshell, a KPI is a metric. However, a metric is not necessarily a KPI.Read more in the blog post from E-Nor agency.
What's the difference between a KPI and a Metric in @googleanalytics ? http://t.co/rmpmVrRZo1 | #measure
— E-Nor (@enorinc) February 11, 2015