cdnjs is a free distributed JS library delivery service.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Open Graph is a protocol that is used to integrate any web page into the social graph.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.