What exactly a difference between the log types "USER_DEBUG" and "DEVELOPER_LOG" in Debug logs?

Hi Archit,

A debug level is a set of log levels for debug log categories, such as Database, Workflow, and Validation. A trace flag includes a debug level, a start time, an end time, and a log type. The log types are DEVELOPER_LOG, USER_DEBUG, and CLASS_TRACING.

When you open the Developer Console, it sets a DEVELOPER_LOG trace flag to log your activities.

USER_DEBUG trace flags cause logging of an individual user’s activities.

CLASS_TRACING trace flags override logging levels for Apex classes and triggers, but don’t generate logs.

Hope this helps you.