Italy Subscriber Data Management Market Size, Share, Competitive Landscape and Trend Analysis Report, by Solution (Subscriber Data Repository, Subscriber Policy Management, Subscriber Identity Management, Subscriber Location and Device Information Management), by Network Type (Mobile Networks, Fixed Networks), by Deployment Model (On-Premises, Cloud), by Enterprise Size (Large Enterprises, Small and Medium Enterprises), by Application Type (Mobile, Voice over Internet Protocol (VoIP), Others): Opportunity Analysis and Industry Forecast, 2021-2031