Confluence going on cloud is much worse than Jira, as working with Confluence depends on multiple frequent successive edits whereas Jira is usually just "visit one page, do one task". On-prem Confluence is as good as working in Microsoft Word -- a desktop application experience -- while Cloud is like working in Windows 3.1, with a little hourglass cursor to wait for between every action you take. I'm glad I never migrated my notes to Confluence.
Also, they're going to lose secure government contracts with this, because Data Center is way above the size of a project team.