Apache is a free and open-source cross-platform web server software.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Google Analytics is a free web analytics service that tracks and reports website traffic.
PHP is a general-purpose scripting language used for web development.
StackPath is a cloud computing and services provider.
WhatsApp Business is a free to download app available on Android and iPhone using which businesses can connect with their customers.