Marketing Cloud Platform Market By Component (Platform, Services), By Type of Cloud (Public, Private, Hybrid), By Marketing Function (Marketing Content and Automation, Marketing Engagement, Marketing Analytics, Marketing Interaction, Others), By Organization Size (Large Enterprises, Small and Medium-sized Enterprises), By Industry Vertical (Retail and E-Commerce, IT and Telecommunication, BFSI, Media and Entertainment, Healthcare, Travel and Hospitality, Others): Global Opportunity Analysis and Industry Forecast, 2021-2031