Global Insurtech-as-a-Service Market Size, Share, Growth Analysis By Service Type (API Platforms, White-label Solutions, Analytics & AI Services, Claims Processing Services), By Application (Digital Distribution, Automated Underwriting, Claims Management, Customer Service), By End-User (Insurance Carriers, Agencies & Brokers, Reinsurers, Corporate Buyers) – Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2025-2035