Remarketing is an AdWords feature that allows marketers to show advertisements to users that have previously visited their website. This feature also allows marketers to create different audience lists based on the behaviors of website visitors in order to serve relevant ads to these segmented audiences. Remarketing Lists for Search (RLSA) via Google Analytics became available in Google AdWords in early June 2015, allowing for the use of standard GA remarketing lists to plan traditional text search ads.

A more advanced subtype of remarketing is dynamic remarketing through which advertisers can show past visitors the specific products or services they viewed to further customize the ad experience. This subtype is especially used by e-commerce websites that foster a diverse range of products and services and need to have their remarketing messages relevant to users.

While remarketing is a mainstream practice, it remains to be perceived as an intrusive one to many users as they might feel annoyingly stalked all over the internet. So, it is recommended for AdWords advertisers to dive deep into optimization practices such as frequency capping so that their remarketing efforts won’t backfire and build customer dissatisfaction and distress instead of brand awareness and sales