Big Data as a Service (BDaaS) Market Size, Share & COVID-19 Impact Analysis, By Solution (Hadoop-as-a-Service, Data-as-a-Service and Data Analytics-as-a-Service), By Deployment Model (Public Cloud, Private Cloud and Hybrid Cloud), By Industry (BFSI, Retail and E-Commerce, IT & Telecom, Healthcare, Government, Manufacturing and Others) and Regional Forecast, 2021-2028