You create a report to show the types of devices users have been coming from over the past 30 days — whether they were on desktops or mobile phones, for example. In this report, what is device type?

In Google Analytics, a dimension describes characteristics or attributes of your data. "Device type" (e.g., desktop, mobile, tablet) categorizes the sessions or users, making it a dimension. Metrics, on the other hand, are quantitative measurements (e.g., number of sessions, bounce rate). An event is a specific user interaction recorded on your website or app (e.g., a button click), and a user refers to an individual visiting your site.