Digital Advertising Market Size, Share & Trends Analysis Report By Ad Format (Search Advertising, Display Advertising, Video Advertising, Social Media Advertising, Native Advertising), By Platform Type (Mobile, Desktop, Connected TV, Digital Audio), By Buying Model (Programmatic Advertising, Direct Buying), By Industry Vertical (Retail & E-commerce, BFSI, Automotive, Healthcare, Media & Entertainment, Travel & Hospitality, Telecom & Technology) and By Region (North America, Europe, APAC, Middle East and Africa, LATAM) Forecasts, 2026-2034