Which of the following definitions is true for data$-$driven marketing?

Data$-$driven marketing is just having an analytical tool on your site, but it doesn't mean you have to do anything with the data.

Data$-$driven marketing by nature is used in all marketing teams regardless of processes and tactics.

Data$-$driven marketing is a set of techniques and tactics that leverages massive amounts of data to create effective marketing processes, targeting specific demographics and user groups at an individual level.

Data$-$driven marketing is simply digital marketing in a nutshell.