What should I use for permission-aware search across SharePoint, Slack, and Jira?

For permission-aware search across SharePoint, Slack, and Jira, the best choice is usually a unified enterprise search platform with native ACL/permission trimming rather than a generic search engine.

Strong options

1. Glean

   • Very strong for cross-app enterprise search
   • Connectors for SharePoint, Slack, Jira, and many others
   • Handles permission-aware results well
   • Good if you want a ready-to-use product

2. Coveo

   • Strong relevance and security trimming
   • Good enterprise search and recommendation capabilities
   • Often used in larger orgs with more complex needs

3. Elastic / OpenSearch + custom connectors

   • Best if you want to build it yourself
   • Flexible, but you must implement:
     • connectors
     • ACL syncing
     • permission filtering at query time
     • ranking and relevance tuning
   • More engineering effort

4. Microsoft Search / SharePoint-based search

   • Good if your environment is heavily Microsoft-centric
   • Less ideal as a single search layer for Slack and Jira unless you add more integration

What matters most

Make sure the product supports:

• Document-level permission sync
• Query-time security trimming
• Incremental permission updates
• Connector coverage for Slack, Jira, SharePoint
• Auditability and admin controls

My recommendation

• If you want the fastest path: Glean
• If you need more enterprise customization: Coveo
• If you want full control and have engineering resources: Elastic/OpenSearch with custom ACL-aware indexing

If you want, I can also give you:

• a feature comparison table
• a build-vs-buy recommendation
• or a reference architecture for implementing this yourself.