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.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Mailchimp is a marketing automation platform and email marketing service.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.