Advertisement is game of mask if there is mask there are changes of conversion and enquiries. Now a day’s people are accessing search engines i.e. Google Bing etc, face book, twitter and other online medium generates higher conversion rates.
Yes there are too many other traditional medium of publicity i.e. news paper, television, radio, banner, holding etc. but they are all expensive and also no accountability like if you want to know that how many people have seen your adv in television there is not any exact figure you can find same is applicable for other traditional advertising medium.
On other hand in digital marketing you can exactly get figure how many people see your adv (website), From which region and many more. It gives us proper return of our investment like if you want to advertise your products or services in specific mass or people you can get more and quick response.