Do I need one platform for both Singapore and Malaysia, or can I use separate tools?

You can use separate tools, but it usually costs you the AI benefit. Running one system for Singapore and another for Malaysia means AI features (if either has them) only ever see half your workforce data, and any cross-entity headcount, cost, or attrition question requires manual reconciliation. A platform with native CPF and EPF handling, like Omni HR, keeps both entities in one data model, which is what makes conversational and predictive AI features actually useful rather than another report to double-check.