I'm a firm believer in having a single source of truth and that's often a Jira ticket ID in the corporate world. On Jira you can either directly link to anothe

I'm a firm believer in having a single source of truth and that's often a Jira ticket ID in the corporate world. On Jira you can either directly link to another item, link to a Confluence page or leave a comment with the unique string (if the boards are not connected). Every git branch and commit contains a Jira ID string, even down to "description" fields in resource properties or meta tags. The idea is a future engineer who I will never meet has a starting point to understand the context of the change. Projects on GitLab get a "release" too which contains the Jira ID, or possibly multiple in the auto-generated CHANGELOG. It's not perfect and does require good discipline however I feel a professional responsibility to make the extra effort.