Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface.
Apache is a free and open-source cross-platform web server software.
Mailchimp is a marketing automation platform and email marketing service.
MODX (originally MODx) is an open source content management system and web application framework for publishing content on the World Wide Web and intranets.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PHP is a general-purpose scripting language used for web development.