Amazon Application Load Balancer (ALB) distributes incoming application traffic to increase availability and support content-based routing.
Apache is a free and open-source cross-platform web server software.
Mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE (formerly Netscape) and even IIS using the Apache JServ Protocol. A web server waits for client HTTP requests.
Open Graph is a protocol that is used to integrate any web page into the social graph.