We used to use a system called Bugzilla, but it was replaced by Jira a few years ago. I really miss the old Bugzilla system because that's where all the business logic resides for our application, and that app was unsettled, with no known backup.
Welcome to the community. Using Jira, one can still implemented the needed business logics through project design/WF design/Automation design.
Do you have any specific questions that you are trying to resolved. If so, you can join (in addition to this group) other community groups (i.e. Jira, Jira Service Management etc) - https://community.atlassian.com/t5/Groups/ct-p/groups,
- https://community.atlassian.com/t5/Products/ct-p/products
where we are all here to assist/learn from each other.
Best, Joseph
Recommended Learning For You
Level up your skills with Atlassian learning
Learning Path
Get started with Jira Software
New to Jira Software? These short, self-paced courses will teach you what you need to know to get up and running quickly.
The Beginner's Guide to Agile in Jira
Learn what agile, kanban, and scrum are and how agile works in Jira Software.
Realizing the Power of Jira Reporting and Dashboards
Use out-of-the box reporting and dashboard capabilities to view and assess progress and bottlenecks within projects.