Dylan Mortensen, senior research analyst for BI Intelligence, Business Insider’s premium research service, has compiled a detailed report on U.S. digital media ad revenue that forecasts revenue trends over the next five years and outlines the key growth drivers for overall digital ad revenue in the U.S.

Here are some key points from the report:

  • US digital ad revenue is expected to reach nearly $100 billion by 2021, according to BI Intelligence estimates. This represents compound annual growth of 8% from the $68.9 billion expected in 2016.
  • Mobile is positioned to become the top destination for digital ad spending as advertisers continue to attempt to close the “mobile opportunity gap.”
  • Digital video advertising will grow faster than any other segment over the next five years, as consumers shift time spent online to phones and tablets. Revenue in this category is forecast to rise from $8.5 billion in 2016 to $23 billion in 2021.
  • Social advertising in all formats is gaining traction and will be among the key drivers of digital ad growth in the next five years. Social ad revenue is poised to climb to $30.8 billion by 2021, up from $15.5 billion this year.
  • Artificial intelligence, augmented and virtual reality, and sponsored content will help propel further digital ad growth in the next decade.

In full, the report:

  • Forecasts US digital ad revenue through 2021.
  • Highlights the rising popularity of digital media with consumers and brands.
  • Explores why digital video advertising growth will exceed all other formats over the next five years.
  • Outlines emerging technologies that will help propel ad growth in the next decade.