OSS/BSS Market Size, By Solution (OSS [Service Assurance, Network Management, Inventory Management], BSS [Billing and Revenue Management, Service Fulfillment, Customer and Product Management]), By Deployment Model (On-premise, Cloud), By Enterprise Size (Small & Medium Enterprise (SME), Large Enterprise), By Application (IT & Telecom, BFSI, Media & Entertainment), COVID-19 Impact Analysis, Regional Outlook, Growth Potential, Competitive Market Share & Forecast, 2022 – 2028