Global Voice Assistant Application Market Size study, by Component (Solutions, Services), by Deployment Mode (On-premises, Cloud), by Organization Size (Small and Medium-sized Enterprises, Large Enterprises), by Channel Integration (Websites, Mobile Applications, Contact Centers, Smart Speakers, Social Media), by Application Area (Smart Retail and eCommerce, Smart Banking, Connected Healthcare, Smart Transportation, Smart Manufacturing, Smart Learning, Others), and Regional Forecasts 2021-2027