Apache is a free and open-source cross-platform web server software.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Microsoft Advertising is an online advertising platform developed by Microsoft.
PHP is a general-purpose scripting language used for web development.
Taboola is a content discovery & native advertising platform for publishers and advertisers.