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.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Cowboy is a small, fast, modular HTTP server written in Erlang.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Heroku is a cloud platform as a service (PaaS) supporting several programming languages.
Mailchimp is a marketing automation platform and email marketing service.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.