Amazon Pay is an online payments processing service that is owned by Amazon. It lets you use the payment methods associated with your Amazon account to make payments for goods and services.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Etracker is a web optimisation solution.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.