Business-to-Business E-commerce Market (By Deployment Type: Supplier-Oriented, Buyer-Oriented, Intermediary-Oriented; By Application: Home And Kitchen, Consumer Electronics, Healthcare, Clothing, Beauty And Personal Care, Sports Apparels, Automotive, Others; By End-User: Network as a Service (NaaS), Data as a Service (DaaS), Storage as a Service (STaaS), Back-end as a Service (BaaS)) - Global Industry Analysis, Market Size, Opportunities and Forecast 2021 - 2028