Abstract: Embodiments disclosed herein generally relate to a system and method for personalization of advertisement content. A computing system receives an HTTP request to access a webpage. The HTTP request includes a visitor identifier. The computing system parses the HTTP request to identify the visitor identifier contained therein. The computing system transfers the visitor identifier to a remote advertisement server. The computing system receives an advertisement call from a web browser executing on the remote computing system. The advertisement call includes the visitor identifier. The computing system generates a customized advertisement based at least on content accessed by the remote computing system on the webpage. The computing system transmits the customized advertisement to the web browser for display with the website on the remote computing system. The website is hosted by the third-party web server.