Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Contentful is an API-first content management platform to create, manage and publish content on any digital channel.
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.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.