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.
Google Analytics is a free web analytics service that tracks and reports website traffic.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Sentry is an open-source platform for workflow productivity, aggregating errors from across the stack in real time.
Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.