What is a backlog in JIRA Agile?
A backlog is the list of tasks which are yet to be allocated for completion. Any large project will end up with lots of things people want;...

https://www.interviewquestionspdf.com/2017/02/what-is-backlog-in-jira-agile.html
A backlog is the list of tasks which are yet to be allocated for completion. Any large project will end up with lots of things people want; as a team you can use JIRA Agile to manage this long list of tasks by ranking, prioritizing, and scheduling the work.