On prem :
- Orchestrator will be hosted by you
- data and everything is stored in internal servers
- Retention policies or adding more customization to orchestrator is possible
- If ai centre is needed another server needs to be used
- HAA add on needs more servers and related costing
Cloud:
- All features available in om prem are available(not fully configuring orchestrator)
- Services like integration services are jot available on on prem as of now
- Integration to ai centre need not have separate server
- Updates to orchestrator versions is seamless
- Hosting is not taken by us
https://docs.uipath.com/overview/other/latest/overview/orchestrator-differences
This is an exhaustive link
https://docs.uipath.com/overview-guide/docs/product-differences
Cheers