I don’t have an accurate number to prove but based on my past experiences, online digital marketing schemes nowadays seems more economical and efficient than conventional marketing schemes,
such as TV commercials. Imagine if I have a website (I do have one) or an online store, with the help of digital (web traffic) analytics I can answer three questions in no time:
1. Who are my visitors (and how many)? (Acquisition)
2. What do they do on my website (and how many)? (Behaviour)
3. Who became my customers eventually (and the ratio)? (Conversion)