Global Payroll-as-a-Service Market Size, Share, Analysis By Service Type (Payroll Processing Services, Tax Filing & Compliance Services, Managed Payroll Services, Multi-Country Payroll Services, Payroll Analytics & Reporting Services, Employee Self-Service & Payroll Administration Services), By Deployment Mode (Cloud-Based, On-Premises, Hybrid), By Organization Size (Large Enterprises, SMEs), By End-User Vertical (BFSI, IT & Telecommunications, Healthcare & Life Sciences, Manufacturing, Retail & E-Commerce, Government & Public Sector, Education, Hospitality & Travel) Industry Region & Key Players-Industry Segment Overview, Market Dynamics, Competitive Strategies, Trends & Forecast 2026-2034