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.
Mailchimp is a marketing automation platform and email marketing service.
Netlify providers hosting and server-less backend services for web applications and static websites.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.