Online Advertising Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: By Ad Format (Social Media, Search Engine, Video, Email, Other); Platform (Mobile, Desktop and Laptop, Other Platforms); Vertical (Automotive, Retail, Healthcare, BFSI, Telecom, Other) , and Geography (North America, Europe, Asia Pacific, and South and Central America)