Azure Edge Network is a global network infrastructure provided by Microsoft Azure. It is designed to deliver content, applications, and services to end-users with low latency and high performance. The Azure Edge Network consists of a combination of Azure Content Delivery Network (CDN), Azure Front Door, and Azure Traffic Manager.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.