What is an issue?
Different organizations use Jira applications to track different kinds of issues, which can represent anything from a software bug, a project task, to a leave request form.
In Jira Service Desk, an issue is a packet of work that agents work on. In an IT service desk, it represents an incident, a change, and a service request, etc. For example, a customer request of "Our printer is not working" appears as follows in the customer portal:
As an agent, you will pick the issue up internally in the service desk project to work on and it will look like the following:
The History tab of an issue records the following information: creator of the issue (this may be the same as the reporter, but can be distinct), changes to an issue field, attachment of a file, deletion of a comment, deletion of a worklog, creation or deletion of an issue link.
The Activity tab has the same information, plus additional information, such as comments. However, this may load more slowly, especially if there has been a lot of activity on the issue.