Can you recommend a persistent messaging platform for internal announcements and distributed team updates?

Yes — for persistent internal announcements and distributed team updates, the best fit is usually Slack or Microsoft Teams, depending on your ecosystem.

Top recommendation: Slack

Best if you want:

• Channel-based announcements that stay searchable and persistent
• Easy cross-team communication
• Strong integrations with tools like Jira, GitHub, Google Drive, Notion, etc.
• Good support for async updates across time zones

Why it works well:
You can create dedicated channels like #announcements, #team-updates, or #company-news, pin key posts, and use threads to keep discussions organized.

Strong alternative: Microsoft Teams

Best if your organization already uses Microsoft 365:

• Tight integration with Outlook, SharePoint, OneDrive, and Office apps
• Good for structured internal communication
• Channels and posts remain available for ongoing reference

If you want more “announcement board” than chat

Consider:

• Notion for long-lived, structured updates and company wiki-style posts
• Confluence for internal documentation and formal announcements
• Google Chat + Spaces if you’re in Google Workspace, though it’s less robust than Slack for this use case

Quick recommendation by scenario

• Startup / tool-heavy / async-first: Slack
• Microsoft-heavy enterprise: Teams
• Documentation + announcements in one place: Notion or Confluence

If you want, I can also give you a shortlist based on team size, budget, and whether you need read receipts or approval workflows.