Global Subscriber Data Management Market, By Solution (Policy Management, Subscriber Data Federation, Identity Management, User Data Repository), Network Type (Mobile Networks, Fixed Networks), Application Type (Mobile, Fixed Mobile Convergence, Voice Over IP and Video Over IP, Others), Organization Size (Large Enterprises, Small and Medium Enterprises), Deployment Type (On-Premises, Cloud), Country (U.S., Canada, Mexico, Brazil, Argentina, Rest of South America, Germany, Italy, U.K., France, Spain, Netherlands, Belgium, Switzerland, Turkey, Russia, Rest of Europe, Japan, China, India, South Korea, Australia, Singapore, Malaysia, Thailand, Indonesia, Philippines, Rest of Asia-Pacific, Saudi Arabia, U.A.E, South Africa, Egypt, Israel, Rest of Middle East and Africa) Industry Trends and Forecast to 2028