Contact Center Software Market by Component (Software, and Services,); By Deployment Type (Cloud, and On-Premises); By Organization Size (Large Enterprises, and Small and Medium-Sized Enterprise); By Vertical (BFSI, Consumer Goods and Retail, Healthcare, IT & Telecom, Government, Travel & Hospitality, Media & Entertainment, and Others); By Geography (North America, Asia-Pacific, Europe, South America, and RoW), Industry Trends, Estimation & Forecast, 2018 – 2026