Every six month IAB releases its report which presents the ad investment by the marketers.
‘Another record-breaking year’
The IAB will report the ninth successive record-breaking year for digital ad revenue, the report says it becomes to $85 billion, a 17 percent rise from a similar time last year.
The critical factors in this enhancement were led by mobile, video. Digital audio media will also be important in the last year but search as before will still dominate all formats.
In comparison with 2016 that the mobile advertising was 50 percent, we saw an increase and showed that during 2017, it became 60 percent. for all types of desktop ads, digital video will be the only one showing the increase.
for more info please read this article.