Software as a Service (SaaS) Market Size, Share & COVID-19 Impact Analysis, By Deployment Type (Public Cloud, Private Cloud, and Hybrid Cloud), By Application (Customer Relationship Management, Enterprise Resource Planning, Content, Collaboration & Communication, Business Intelligence & Analytics, Human Capital Management, and Others), By Industry (BFSI, Retail & Consumer Goods, Healthcare, Education, Manufacturing, Travel & Hospitality, and Others) and Regional Forecast, 2021-2028