Apache is a free and open-source cross-platform web server software.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Linkedin Ads is a paid marketing tool that offers access to Linkedin social networks through various sponsored posts and other methods.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Shopware is an enterprise-level ecommerce platform.
A modest JavaScript framework for the HTML you already have.