I am sure the picture above explains your question.
This is a digital world.
We are completely a techno savvy people. So before we invest or buy products we first make a complete search of it online and tread reviews about it, and hen decide.
So is mainly advertising your product online and reaching to the masses.
right from web banners, ad campaigns, mobile Applications, blog posts etc are forms of Digital marketing. It is quite cost effective, flexible, instant response, faster mode of reaching, and majorly convenient.
Digital marketing includes: