The digital ad market is booming.

In a report published Thursday by research firm Strategy Analytics, the company estimated that digital ad spend has risen 40% over the past four years to $2.5 billion.

Advertisers now spend $1.6 billion per day on digital ads.

In 2014, digital ads accounted for 19% of ad spending.

In 2016, digital ad spending grew to 21% of advertising spending.

The growth in digital ad dollars is an indication of the scale of the digital advertising market.

According to Strategy Analytics’ 2017 report, digital advertising accounted for $3.6 trillion in total spending.

Digital ad spending has grown in part because advertisers have started to use the Internet to reach more consumers.

That has helped drive a number of other changes.

A recent survey by Nielsen found that online-enabled video ads now represent a smaller portion of overall ad spending than the traditional TV and print ads.

And in the digital ad space, ads that are viewed on mobile devices are showing a more consistent level of engagement than traditional ads.

Advertising companies also see an increase in digital advertising revenue, which has surged 40% to $1 billion per year from $1 million a year earlier.

That’s a significant boost because digital advertising is one of the biggest revenue streams in the advertising business, and companies are increasingly investing in digital ads to drive sales.

Digital advertising revenue has doubled since 2011, according to the survey.

Advertisements in 2018 generated $1,066 billion in revenue, up from $878 million in 2017.

In the digital space, there are a variety of ways that companies can increase their digital ad revenues.

One of the best ways to get the most bang for your digital advertising buck is by offering targeted advertising.

Targeted advertising is a term that refers to campaigns that are placed with particular audiences, such as those that target specific groups of consumers or businesses.

Advertisers can also target ads based on users’ interests.

For example, a company might place ads with the targeted group of consumers that are looking for a certain type of car.

In some cases, a digital ad will even appear in the news to help generate traffic to the ad.

For businesses, digital targeting is a way to increase revenue.

For instance, some companies, like Google and Facebook, are using ad tracking software to help determine which ads are most relevant to a specific audience.

In other cases, businesses can target ads to certain demographics, such a people who are interested in a particular topic.

The digital ad industry has also seen an uptick in revenue.

According the Strategy Analytics report, in 2018 digital advertising generated $3 billion in total revenue.

Digital ad spend increased $9.4 billion, or 25% from 2017.

The report also notes that digital advertising was a larger portion of digital advertising spending in 2020 than it was in 2016.

In 2018, the ad spending trend was also driven by a decline in the size of digital ads as companies moved away from traditional TV ads.

In 2020, the average digital ad size was 6.3 square feet, down from 8.6 square feet in 2017 and 10.4 square feet last year.

That makes digital advertising one of just three ad formats that was shrinking in size over the last year, according the report.

Ads are becoming more relevant and less costly because digital ad budgets are shrinking, according Strategy Analytics.

This trend is expected to continue in 2020 as advertisers look to diversify their ad campaigns.

Another factor driving the ad revenue trend is the rise in mobile advertising.

Mobile ads are typically shown on smartphones or tablets, and they can be seen in an instant.

This means that advertisers can target their ads to mobile users much more easily.

According to the Strategy Group’s report, mobile advertising spending is expected increase from $5.3 billion last year to $11.1 billion in 2020.

Ad spending in the mobile ad space has been growing for years, with mobile spending growing faster than digital advertising over the same period.