Global Digital Marketing Spending Market Size, Share, Industry Analysis Report By Channel/Platform (Search Advertising, Social Media Advertising, Video Advertising, Display Advertising, Email Marketing, Others), By Pricing Model (Cost-Per-Click (CPC), Cost-Per-Thousand-Impressions (CPM), Cost-Per-Acquisition/Action (CPA)),By Organization Size (Large Enterprises, Small & Medium-sized Enterprises (SMEs)),By Industry Vertical (Retail & E-commerce (largest spender), Consumer Packaged Goods (CPG) & FMCG, BFSI, Automotive, Technology & Telecom, Travel & Hospitality, Healthcare & Pharma, Others), By Regional Analysis, Global Trends and Opportunity, Future Outlook By 2025-2034