Akamai mPulse is a real user monitoring (RUM) solution that enables companies to monitor, find, and fix website and application performance issues.
Akamai is global content delivery network (CDN) services provider for media and software delivery, and cloud security solutions.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.