Well, to add a counterpoint, never in my career I have encountered a place with a proper atlassian products integration. The most common integration I saw was using Jira and Confluence, which seems a little underwhelming to me. In all the places I have seen a mishmash of different products not really glued together and the workers had to navigate that mess. One of the places I’ve worked on had salesforce for customer sided issue tracking, and JIRA for software development tracking. Support engineers had to copy and paste tickets to raise defects and bugs, keeping track of all the interactions in both systems. Silly stuff.