全球统一通信服务市场Research Report: By Deployment Mode (Managed and Hosted [UC SaaS, UC PaaS and UC IaaS]), Service (Telephony Services, Contact Center Services, UC Application Services, and Collaboration Services), Organization Size (Large Enterprises and Small and Medium Enterprises), Delivery Model (Standalone Services and Integrated Services), Vertical (BFSI, IT & Telecom, Public Sector, Retail, Healthcare, Logistics & Transportation, Travel & Hospitality and others), Region (North America, Europe, Asia Pacific, Middle East, and Africa and South America) - Forecast till 2027