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.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Userlike is a cloud-based live chat solution that can be integrated with existing websites.