Global Cloud-Based Contact Centers Market By Type (Automatic Call Distribution (ACD) , Agent Performance Optimization (APO) , Dialers , Interactive Voice Response (IVR) , Computer Telephony Integration (CTI) , and Other), By Application (BFSI , IT and Telecom , Retail , Government and Public Sector , Healthcare and Life Sciences , Manufacturing , and Other ), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028