Software-Defined Wide Area Network (SD-WAN) Market Size By Component (Solution [Physical Appliance, Virtual Appliance], Service [Training & Consulting, Integration & Maintenance, Managed Service]), By Deployment Model (On-premise, Cloud, Hybrid), By Application (IT & Telecom, BFSI, Healthcare, Retail & Consumer Goods, Government, Manufacturing), Industry Analysis Report, Regional Outlook, Growth Potential, Competitive Market Share & Forecast, 2020 - 2026