These are the websites that used as references
- https://www.youtube.com/watch?v=32WEzM3LFhw
- http://searchsoa.techtarget.com/definition/Java
- http://searchsoa.techtarget.com/definition/HTML
- http://www.w3schools.com/css/css_intro.asp
- http://whatis.techtarget.com/definition/Cassandra-Apache-Cassandra
- http://www.datacenterknowledge.com/the-facebook-data-center-faq/
- https://www.linux.com/what-is-linux
- http://www.intel.com/content/www/us/en/processors/xeon/xeon-processor-e7-family.html
- http://www.appbuilder.com/