Global Big data as a Service Market By Type (Hadoop-as-a-Service (HDaaS) , Data Analytics-as-a-Service (DAaaS) , and Data-as-a-Service (DaaS)), By Application (Banking & Financial Services , Retail , Manufacturing , Energy & Utilities , Healthcare , Public Sector , and Media & Entertainment), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029