Mobile ad revenue has exploded in recent years.
In the United States, ad revenue grew by more than 50 percent over the past two years to $5.7 billion, according to Kantar Media/CMAG.
The boom in mobile ad spending has created a market for companies to create mobile-specific content, ads that can be run across different platforms and on different devices, to attract audiences.
The new digital marketing strategy is being used by brands to boost sales on their own websites and social media platforms, according.
For mobile ads, companies can use a combination of mobile device tracking devices, ad-tech firms and paid data brokers.
Companies are also using mobile device data, such as location data, to track users.
The rise in mobile data usage has led to concerns about privacy and data collection, said Richard Poulin, a senior research analyst with research firm eMarketer.
The growing trend in mobile advertising has attracted attention from the Federal Trade Commission and other regulators.
In January, the FTC announced that it had launched an investigation into the use of automated data mining to track consumers, including their location, and how they use their phones and mobile devices.
As mobile ads grew in popularity, so did the proliferation of mobile advertising companies.
The growth of mobile ad companies has created new revenue streams, including digital-only ads that aren’t connected to a physical location, said John Caudill, a director at eMarket, a research firm that tracks digital-to-physical ads.
According to a new report by the Pew Research Center, mobile advertising grew at an average annual rate of 7.5 percent over last five years.
That growth, according a report from eMarkets, led to an estimated $4.9 billion in digital ad revenue.
The average number of mobile-only ad clicks on websites in the United Kingdom was about 8.3 million last year, up from about 6 million a year earlier.
The growth of ad-platform companies in the U.S. and elsewhere is making it harder for ad companies to keep up with the fast-moving technology.
As the number of ad networks has increased, they have also seen more people using mobile devices for various purposes, including tracking their purchases and sharing ad results with other users.
That trend is also contributing to the growing number of apps that can collect and share data about users, said Adam S. Zentner, a digital marketing strategist with eMarketers.
Mobile ads are also getting increasingly more expensive as they are being more closely integrated into the digital ad ecosystem.
This is a very, very complex space, he said.
Advertisers are increasingly looking for ways to capture the data that they need to target a consumer.
For instance, companies are looking to better target customers on mobile devices who use apps, and the ad networks are also increasingly working with mobile-friendly ad networks to provide personalized targeting.
With the increased focus on mobile ads as a way to get more ad impressions and to generate revenue, many companies are working to better understand how to use data to improve their online advertising, said Jason C. Smith, an eMarketing executive at ePacket, a mobile advertising platform that partners with major advertising and digital media companies.
“It’s an interesting space, and companies are beginning to figure out how to monetize the data they have,” Smith said.