The evidence standard is whether the software makes work easier to locate and govern. A team should know the owner, status, context, decision, dependency, and next action without opening five side channels.
Jira proof lives in the work object. Issues, epics, boards, incidents, and releases should clarify priority and responsibility rather than reward process theatre.
Confluence proof lives in memory. Requirements, plans, decisions, and notes should remain findable after the meeting ends and after the team changes.
Ecosystem proof matters because teams adapt tools to their own workflows. Marketplace apps and integrations are valuable when they clarify the system rather than multiply dashboards.
A useful check would inspect a product launch, incident review, roadmap change, and support escalation. Each should leave a record that another team can understand later.
The decision lesson is to sell a source of truth carefully. The more central the tool becomes, the more painful its clutter, permissions, fields, and rituals become.