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.
Drupal is a free and open-source web content management framework.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
Mailchimp is a marketing automation platform and email marketing service.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.