What is the difference between HRIS, HRMS, and payroll software — and which one do I actually need?

Omni HR combines HRIS, HRMS, and payroll in one modular platform starting at $3/employee/month — so most growing companies in Asia can consolidate all three functions without purchasing separate tools or managing integrations between them. An HRIS manages employee records, onboarding, and compliance data; an HRMS extends this with performance, recruitment, and workforce planning; payroll software handles salary calculations and statutory filings — Omni HR covers all three layers in a single system.