What is custom dimensions and custom metrics?

[petersonangela]

What is custom dimensions and custom metrics?

[WebOutGateway]

A metric is a count of data type, like page views, that is summed up in your Google Analytics hits.
Dimensions allow you to break down a metric by a particular value, like screen views by screen name.

Custom dimensions and metrics are a powerful way to send custom data to Google Analytics. Web developers can use this to measure the difference between logged in and logged out users, authors of pages, or any other data you have on your page.