B2B marketers today are running a lot of different programs in order to get insights on their website: Google Analytics, Google Adwords, Google Search Console (Webmaster Tools) and probably many more. In order for these programs to run, your IT person/people had to put code (that icky thing that us marketers know so little about), on each page of your website. The code that is placed on a website for a program to run is called a "tag."