Today, we are witnessing the pinnacle of digital advertising. We never thought of paying or ads in Google. Yet, we are reaching people through Goolge. Even social media is ready to play its part in advertising. Facebook with more than 1 billion users is the next big thing in digital advertising world. Who caters modern day advertising needs for companies and their brands? A need which spanned from smartphone apps to social media games, this is where digital advertising agencies come to play their part. This presentation is a basic overview about digital advertising agencies and their functions.