Confluence is most effective when teams need a single, trusted workspace to create, organize, and share knowledge. Common use cases include maintaining project documentation (plans, timelines, requirements, and decisions), building internal wikis for policies, SOPs, and onboarding guides, and collaborating on meeting agendas, notes, and action items with clear ownership. Product and engineering teams use it for PRDs, release notes, architecture documentation, and incident postmortems, while HR and operations rely on it for employee handbooks, workflows, and compliance records. Confluence also supports cross-functional alignment through shared roadmaps, status pages, and OKRs, ensuring everyone works from the same information. With templates, permissions, and integrations (e.g., Jira), it improves consistency, visibility, and accountability across teams.